Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Reliability”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 937 records · Page 52Linked to original sources
PubMed2004

Inter-rater reliability of sleep cyclic alternating pattern (CAP) scoring and validation of a new computer-assisted CAP scoring method.

OBJECTIVE: To assess inter-rater reliability between different scorers, from different qualified sleep research groups, in scoring visually the Cyclic Alternating Pattern (CAP), to evaluate the performances of a new tool for the computer-assisted detection of CAP, and to compare its output with the data from the different scorers. METHODS: CAP was scored in 11 normal sleep recordings by four different raters, coming from three sleep laboratories. CAP was also scored in the same recordings by means of a new computer-assisted method, implemented in the Hypnolab 1.2 (SWS Soft, Italy) software. Data analysis was performed according to the following steps: (a) the inter-rater reliability of CAP parameters between the four different scorers was carried out by means of the Kendall W coefficient of concordance; (b) the analysis of the agreement between the results of the visual and computer-assisted analysis of CAP parameters was also carried out by means of the Kendall W coefficient; (c) a 'consensus' scoring was obtained, for each recording, from the four scorings provided by the different raters, based on the score of the majority of scorers; (d) the degree of agreement between each scorer and the consensus score and between the computer-assisted analysis and the consensus score was quantified by means of the Cohen's k coefficient; (e) the differences between the number of false positive and false negative detections obtained in the visual and in the computer-assisted analysis were also evaluated by means of the non-parametric Wilcoxon test. RESULTS: The inter-rater reliability of CAP parameters quantified by the Kendall W coefficient of concordance between the four different scorers was high for all the parameters considered and showed values above 0.9 for total CAP time, CAP time in sleep stage 2 and percentage of A phases in sequence; also CAP rate showed a high value (0.829). The most important global parameters of CAP, including total CAP rate and CAP time, scored by the computer-assisted analysis showed a significant concordance with those obtained by the raters. The agreement between the computer-assisted analysis and the consensus scoring for the assignment of the CAP A phase subtype was not distinguishable from that expected from a human scorer. However, the computer-assisted analysis provided a number of false positives and false negatives significantly higher than that of the visual scoring of CAP. CONCLUSIONS: CAP scoring shows good inter-rater reliability and might be compared in different laboratories the results of which might also be pooled together; however, caution should always be taken because of the variability which can be expected in the classical sleep staging. The computer-assisted detection of CAP can be used with some supervision and correction in large studies when only general parameters such as CAP rate are considered; more editing is necessary for the correct use of the other results. SIGNIFICANCE: This article describes the first attempt in the literature to evaluate in a detailed way the inter-rater reliability in scoring CAP parameters of normal sleep and the performances of a human-supervised computerized automatic detection system.

Adult↗
PubMed2005

Reliability of elbow stretch reflex assessment in chronic post-stroke hemiparesis.

OBJECTIVE: To establish reliability of quantitative measures of elbow joint spastic hypertonia in post-stroke hemiparesis. METHODS: Nine subjects with post-stroke hemiparesis (mn duration: 42 months) were tested on three separate days. Biceps brachii and brachioradialis EMG were recorded during passive ramp-and-hold extensions applied at seven speeds between 30 and 210 degrees /s. EMG burst duration, onset position threshold, and burst intensity were used to evaluate reflex activity. Torque at 40 degrees of elbow flexion was used as a mechanical indicator of spastic hypertonia. RESULTS: Across speeds ICCs were consistent, means ranged between 0.63 and 0.85. Thus, relative reliability was fair to excellent for all parameters. Absolute reliability, determined using standard error of measurement expressed as a percentage of the mean score (%SEM), improved at higher speeds (> or = 120 degrees/s). CONCLUSIONS: These results establish reliability of reflex and mechanical measures of elbow spastic hypertonia post-stroke. The data demonstrate greater reflex detection at high speeds, indicating greater potential to document meaningful changes in these distinct aspects of spastic hypertonia following intervention. SIGNIFICANCE: Based on findings of this study, reliability was demonstrated using four parameters of reflex EMG and torque indicating measurement consistency across sessions. These observations motivate determination of requisite effect sizes for clinical trials that evaluate treatment outcome.

Aged↗
PubMed2006

Cervical joint position sense: an intra- and inter-examiner reliability study.

OBJECTIVES: To evaluate the intra- and inter-examiner reliability of neck active joint position sense measurements in different head movements. METHODS: Participants had to reproduce actively a specific angle-target in all movements (flexion, right/left rotation, right/left side flexion) from two initial positions, sitting and standing by using a 3D ultrasound-based motion analysis device. Three tests were employed to assess intra-examiner reliability and two examiners used for the inter-examiner reliability. Absolute error (AE) and variable error (VE) indices were used to assess the repositioning accuracy. Intraclass correlation coefficient (I.C.C.(1,1)), standard error of measurement (S.E.M.), smallest detectable difference (S.D.D.) indices were calculated for the analysis of the results. RESULTS: Both AE and VE yielded poor to moderate I.C.C.s in any movement and position (-0.01 to 0.50 and 0.01-0.25, respectively). AE presented higher I.C.C.s estimates than the VE but the S.D.D.s were similar for both indices. Regarding the AE, the standing position yielded higher I.C.C. estimates (0.15-0.68) than the sitting position (-0.01 to 0.43) but the S.E.M. (1.2-3.0 degrees and 1.5-3.5 degrees, respectively) and S.D.D. values (123.3-191.8% and 139.9-203.8%, respectively) showed no specific trend in favour of any position. The VE reliability indices showed that standing position was more reliable with less error than sitting. The inter-examiner data showed similar results to the intra-examiner study. CONCLUSIONS: The statistical analysis of the present experiments showed that the method employed for measuring cervical joint position sense is unreliable. However, it needs further research to identify the discriminatory power of these tests or if they are clinically unacceptable.

Adult↗
PubMed2006

Increasing the number of gait trial recordings maximises intra-rater reliability of the CODA motion analysis system.

OBJECTIVE: This study investigates the optimum number of gait trial recordings to maximise intra-rater reliability with the CODA motion analysis system in a normal population. Potential sources of variability in test-retest experimental procedures will be discussed. BACKGROUND: The most recent study by [Maynard V, Bakheit AMO, Oldham J, Freeman J. Intra-rater and inter-rater reliability of gait measurements with CODA mpx30 motion analysis system. Gait Posture 2003;17:59-67] that evaluated the Cartesian Optoelectronic Dynamic Anthropometer (CODA) motion analysis system exhibited poor correlation for intra-rater reliability of kinematic and kinetic parameters. It is unknown what the optimum number of gait trials is required during testing to represent an individuals gait pattern during normal walking. DESIGN: Ten healthy subjects (mean 28.5 years) were tested on two occasions by an experienced well trained rater during normal walking to establish intra-rater reliability using 1-2, 1-4, 1-6, 1-8, and 1-10 gait trial recordings to represent the mean. The 3D kinematic, kinetic parameters of hip, knee and ankle joints and spatio-temporal parameters were recorded during normal walking. Intra-class correlation coefficient and Bland and Altman limits of agreement were chosen to analyse the results. RESULTS: Spatio-temporal parameters exhibited least test-retest variability, as measurement of only two gait trials to represent the mean produced similar variability in test-retest as when higher numbers of trials were measured. Kinematic parameters were more variable than kinetic while for both variability decreased with increasing numbers of trials measured and would advocate measuring 10 gait trials for future analysis when measuring these parameters. CONCLUSIONS: Generally intra-rater reliability improves when larger number of gait trial recordings represent a subject's gait.

Adult↗
PubMedDate not supplied

The reliability and validity of a new and simple method to measure sedation levels in intensive care patients: a pilot study.

BACKGROUND: Since more sophisticated ventilation techniques have enabled patients to comply with the ventilator with little or no sedation, deep sedation levels can easily be avoided. However, successful ventilation techniques also expanded the treatment possibilities for more severely ill patients who require deeper sedation levels. We developed a new sedation score to improve the prevention of oversedation and to simplify scoring practice in the intensive care unit (ICU). OBJECTIVE: The study's objective was to establish the validity and reliability of a new sedation score (Sedic score) for critically ill, sedated adult patients. METHODS: We prospectively evaluated the reliability and validity of the Sedic score. The study took place in a 30-bed ICU in a university teaching hospital. Forty-six consecutive mechanically ventilated and sedated ICU patients were included. The constructed scale consists of five levels of stimuli and five levels of responses. Sedation levels are defined by the sum of stimulus and response. The reliability of the Sedic score was assessed by simultaneous measurement by the research nurse and attending nurse (n=70). VALIDITY was expressed as (1) the hierarchic relation between stimulus and response (n=443), (2) the prediction of wake-up time by the Sedic score (n=46), and (3) the association between the Sedic score and the Ramsay scale (n=88). RESULTS: The method showed excellent reliability. VALIDITY: Weighted kappa between stimulus and response was .82. Multivariate analysis: (recovery time as independent variable) regression line (Y=-2.53+ 2.16 * beta; P<.001) (r2=42%). Correlation between the Sedic scores and the Ramsay scores was r(s) .74 (P=.01). Sixty-seven percent of the patients with a maximum Ramsay score of 6 had scores ranging between 6 and 10 on the Sedic scale, indicating that the Ramsay scale has a serious ceiling effect. CONCLUSION: The Sedic score demonstrates sufficient reliability and validity, and correlates well with wake-up time. It allows for frequent use by nurses to avoid oversedation in patients.

Adult↗
PubMed2005

Reliability of classification systems for intertrochanteric fractures of the proximal femur in experienced orthopaedic surgeons.

INTRODUCTION: The aim of this study was to determine the reliability of currently used classification systems for intertrochanteric fractures of the proximal femur, and to determine the reliability of these systems in experienced orthopaedic surgeons. MATERIALS AND METHODS: Forty intertrochanteric fractures of the proximal femur were classified independently by five experienced observers using the AO, Evans, Kyle, and Boyd classification systems on two separate occasions 3 months apart. The interobserver and intraobserver variation was assessed using kappa statistics. RESULTS: The level of agreement for classification into AO groups was almost perfect or substantial, and higher than other classification systems. When the fractures were further classified using the AO classification with subgroups, reliability became worse. CONCLUSIONS: The current study suggests that the AO classification system with groups can be used more reliably to measure intertrochanteric fractures of the proximal femur than Evans, Kyle, and Boyd classification systems. However, the reliability of the AO classification with subgroups is not satisfactory.

Femur Head↗
PubMed2004

Reliability of identification of 655 sentinel lymph nodes in 263 consecutive patients with malignant melanoma.

BACKGROUND: The purpose of this study of sentinel lymph node biopsies (SLN) was threefold: to compare the reliability of lymphazurin blue dye to radioactive technetium 99m sulfur colloid (TC); to evaluate the reliability of frozen section examinations of sentinel lymph nodes; and to determine how much SLN dissections prolonged operative time. STUDY DESIGN: We evaluated the records of 263 consecutive patients with intermediate and high-risk melanomas (1.0 mm or thicker, or Clark Level IV or greater), who were treated by a single surgeon at the Yale Melanoma Unit between October 1, 1997, and September 30, 2001, and followed for more than 18 months. RESULTS: A total of 655 SLN were identified and removed from these 263 consecutive patients. Radioactive colloid was found to be more reliable (100%) in identifying the SLN than lymphazurin blue dye (51%) in the nodes of the patients. Twenty-eight patients (11%) had positive sentinel lymph nodes, and 2 patients (7%) had false-negative frozen sections. Three patients (11%) had false-negative frozen sections; tumor was found subsequently on permanent sections only after special immunohistochemical stains were used. The location or removal of SLN did not prolong the operative procedure unreasonably, requiring an average of 7 to 20 minutes for removal of SLN, and 33 minutes for frozen section reports, during which time the primary tumor resection and wound coverage were performed. CONCLUSIONS: SLN were found in all 263 patients. All SLN were identified reliably with radioactive colloid. Because blue dye was found in only half of the radioactive nodes, it is not appropriate to use this as the only marker for locating the SLN. This large series of patients attests to the reliability of frozen sections in identifying SLN harboring metastases, with 82% of the patients with nodal metastases identified in this fashion.

Follow-Up Studies↗
PubMed2005

Cumulative Illness Rating Scale was a reliable and valid index in a family practice context.

BACKGROUND AND OBJECTIVE: The goal of this study was to validate an instrument measuring the clinical burden of several medical problems in the same patient (multimorbidity), in a family practice context and, more specifically, to verify if trained nurses can score the Cumulative Illness Rating Scale (CIRS) from chart review. STUDY DESIGN AND SETTING: A convenience sample of 40 patients was selected. The attending physicians scored the CIRS during clinical interview (CIRS-MD/I), then three nurses scored the CIRS during clinical interview (CIRS-NUR/I) and three other nurses scored the CIRS from chart review (CIRS-NUR/C) (interrater reliability). Two of these nurses scored the CIRS-NUR/C again 2 months later (intrarater reliability). RESULTS: For interrater reliability, the intraclass correlation coefficients were 0.81 (0.70-0.89) for the CIRS-NUR/I and 0.78 (0.66-0.87) for the CIRS-NUR/C. The intrarater reliability of the CIRS-NUR/C was 0.89 (0.80-0.94) for one of the nurses and 0.80 (0.65-0.89) for the other. Concomitant validity of these two forms of CIRS with the CIRS-MD/I ranged from 0.73 to 0.84. CONCLUSION: The CIRS appears to be a reliable and valid instrument in a primary care context and trained nurses can score the CIRS from chart review.

Adolescent↗
PubMed2005

Self-report INH adherence measures were reliable and valid in Latino adolescents with latent tuberculosis infection.

BACKGROUND AND OBJECTIVE: To test the reliability and validity of 8-day and 30-day self-report measures of adherence to daily isoniazid (INH) for treatment of latent tuberculosis infection (LTBI). METHODS: Participants were 286 Latino adolescents (ages 13-18, 55.6% male) with LTBI recruited from 10 public middle and high schools in San Diego County. INH adherence was measured monthly for up to 9 months by interview and urine specimens at unannounced visits. Reliability and validity analyses were performed within 5 consecutive months. Reliability was assessed by correlating: (1) 8- and 30-day INH adherence measures within each month; and (2) each of the two adherence measures across months. Validity was assessed by correlating reported measures with biological assays within each month. RESULTS: Reliability tests yielded significant correlation coefficients (p < .05 to .001), both across measures (r = 0.71-0.93) and across time (r = 0.29-0.64 for 8-day recall; r = 0.32-0.69 for 30-day recall). Validity tests of both adherence measures were also significant (p < .05 to .001): 8-day recall (r(pb) = 0.52-0.72) and 30-day recall (r(pb) = 0.37-0.71). CONCLUSION: Results suggest that impromptu recall measures of INH adherence, combined with urine collection, are reliable and valid in Latino adolescents.

Adolescent↗
PubMed2005

A self-assessment tool was reliable in identifying hazards in the homes of elders.

BACKGROUND AND OBJECTIVES: Falls are a leading cause of fatal and nonfatal injuries, particularly among the elderly. A reliable instrument for self-assessment of home falls hazards would facilitate screening for falls risk. This study examined the reliability of self-assessment of home falls hazards by elderly women. METHODS AND SETTING: Participants were 52 elderly women, aged 67 to 97. All evaluations were performed in the participants' homes. Home falls hazards were evaluated independently by study participants and by trained observers. RESULTS: Kappa statistics indicated good to excellent agreement for most of the environmental factors. However, observers were significantly more likely than the study participants to report certain tripping hazards, particularly objects in walkways. CONCLUSION: This home checklist is an important step towards a reliable self-report instrument for measuring home falls hazards. Self-assessment appears to be a reliable method for assessing many putative hazards of falling in the home. However, our findings raise questions regarding the reliable assessment of tripping hazards.

Accidental Falls↗
PubMed2006

Reliability and performance-dependent variations of muscle function variables during isometric knee extension.

Despite the common use of standardised methods analysing neuromuscular function during knee extension, there is a lack of test-retest reliability studies. Furthermore, for most of the investigated variables it is unknown which changes of values indicate an enhancement of performance. The aim of the present study was to investigate performance-dependent variations of muscle functions during isometric contraction of knee extensors and to examine test-retest reliability of their measurement methods. For test-retest reliability sports students completed three test sessions. Highly skilled athletes, sports students and untrained subjects were investigated to determine the performance-dependent variations. The following variables were analysed: maximal voluntary contraction (MVC), voluntary activation (VA), absolute muscle reaction time (AR), muscle endurance (ME), and EMG frequency analysis (MF) of m. vastus lateralis (VL), m. vastus medialis (VM) and m. rectus femoris (RF). RESULTS TEST-RETEST-RELIABILITY: A high reliability between session 1 vs. 2 and session 2 vs. 3 was shown for MVC (ICC=0.92 and .97), VA (0.92/0.95) and ME (0.87/0.95). ICC in AR (0.23) was low between the first and second session and moderate between the second and third session (0.74). MF of VL, VM and RF showed low ICC between sessions. PERFORMANCE DEPENDENT VARIATIONS: Significant differences in nearly all variables (except VA) were found between trained (athletes and sports students) and untrained subjects.

Adult↗
PubMed2006

The Soterion Rapid Triage System: evaluation of inter-rater reliability and validity.

The Soterion Rapid Triage System is a new, computerized, five-level triage acuity system. The purpose of this study was to evaluate the system's inter-rater reliability and validity for stratifying patient acuity. The study was comprised of two components. A prospective evaluation of inter-rater reliability was conducted by the blinded, paired simultaneous triage of 423 patients. A retrospective evaluation of validity consisted of the analysis of 33,850 patients triaged with the system over an 8-month period. The system's validity was measured by in-hospital admission rate, Emergency Department (ED) length-of-stay, hospital charges and Current Procedural Terminology (CPT) Codes 99281-99285. Evaluation of inter-rater reliability demonstrated a weighted kappa of 0.87 (95% confidence interval 0.84, 0.91). The in-hospital admission rates for patients triaged as Level 1 Immediate-Level 5 Non-Urgent were 43%, 30%, 13%, 3% and 1%, respectively (p < 0.0001). Similarly, there were significant differences in the means for all hospital charges, ED lengths-of-stay, and CPT Codes. In conclusion, the Soterion Rapid Triage System possesses high inter-rater reliability and validity. The system's reliability and validity, and the availability of the system's electronically archived data are characteristics beneficial to the development of a national standardized five-level triage acuity system.

Algorithms↗
PubMed2004

Reliability of tendon excursion measurements in patients using a color Doppler imaging system.

PURPOSE: The purpose of this study was to assess the test-retest reliability of tendon excursion measurements with color Doppler imaging in patients with flexor tendon injuries following a modified Kleinert protocol. METHODS: One observer performed repeated measurements at 3 different time periods in 13 patients with flexor tendon injuries, following a modified Kleinert protocol. The intraclass correlation coefficient (ICC), the standard error of measurement (SEM), and related indices of measurement error were calculated. RESULTS: Measurements at 10 day after surgery had an ICC of.88 and an SEM of 1.1 mm. Measurements at 6 weeks after surgery had an ICC of.58 and an SEM of 2.0 mm. The measurements after 3 months had an ICC of.94 and an SEM of 1.2 mm. CONCLUSION: Measurements at 10 days and more than 3 months after surgery were reliable and were as reliable as the measurements performed on healthy subjects. At 6 weeks after surgery the measurements were less reliable. Color Doppler imaging is a reliable and noninvasive method to assess tendon excursion, even in patients with small tendon excursion movements.

Female↗
PubMed2005

Reliability of McKenzie classification of patients with cervical or lumbar pain.

BACKGROUND: In the McKenzie system, patients are classified first into syndromes, then into subsyndromes. At present, the reliability of classification with this system is unclear. No study has included patients with cervical pain, and the studies to date have reported conflicting results. OBJECTIVE: The aim of the study is to investigate the interexaminer reliability of the McKenzie classification system for patients with cervical or lumbar pain. SUBJECTS: Fifty patients with spinal pain (25 with lumbar pain and 25 with cervical pain) were included in the study. METHOD: The patients were assessed simultaneously by 2 physical therapists (14 in total) trained in the McKenzie method. Agreement was expressed using the multirater kappa coefficient and percent agreement for classification into (i) syndromes and (ii) subsyndromes. RESULTS: The reliability for syndrome classification was kappa = 0.84 with 96% agreement for the total patient pool, kappa = 1.0 with 100% agreement for lumbar patients, and kappa = 0.63 with 92% agreement for cervical patients. The reliability for subsyndrome classification was kappa = 0.87 with 90% agreement for the total patient pool, kappa = 0.89 with 92% agreement for lumbar patients, and kappa = 0.84 with 88% agreement for the cervical patients. CONCLUSION: The McKenzie assessment performed by persons trained in the McKenzie method may allow for reliable classification of patients with lumbar and cervical pain.

Female↗
PubMed2006

Reliability of a clinical test for deep cervical flexor endurance.

OBJECTIVE: Endurance deficiencies of the deep cervical flexors are associated with pain, increased lordosis, and headache. A need exists for reliable clinical tests of flexor endurance. This study determined intrarater and interrater reliability of such a test in persons without neck pain. METHODS: Twenty-seven subjects (aged 20-35 years) without a history of neck pain or injury were tested. Supine subjects were timed in maintaining a position involving two components: (1) craniovertebral flexion (chin tuck) and (2) lower cervical flexion (holding the occiput at a fixed height). Each subject was examined twice by 3 different examiners with 1 to 2 days between trials. RESULTS: When two values were averaged, interrater reliability for the 3 testers was 0.83, 0.85, and 0.88. Intrarater reliability values were 0.78 and 0.85 for tests 1 and 2, respectively. CONCLUSIONS: The flexor endurance test showed good intertester and intratester reliability when two values were averaged and, thus, may represent a useful clinical tool for practitioners involved in treating and preventing neck pain.

Adult↗
PubMed2006

Translation, cross-cultural adaptation, reliability, and validity of the German version of the Coping Strategies Questionnaire (CSQ-D).

UNLABELLED: The aim of this study was to translate and cross-culturally adapt the American version of the Coping Strategies Questionnaire (CSQ) and to test the reliability and validity of the German version (CSQ-D). The CSQ was translated and cross-culturally adapted following international guidelines. Reliability and validity were tested in 62 individuals with chronic musculoskeletal pain syndromes. For the concurrent criterion-related validity the CSQ-D scales were compared with the German Pain Coping Questionnaire (FESV-BW), and for the construct validity with the German Short Form 36 (SF-36). The translation process proceeded without major difficulties. In testing for reliability, the CSQ-D as a whole had a Cronbach's alpha of .94 and an intraclass correlation coefficient of .89 (95% CI .86-.98). The total CSQ-D score was correlated to the FESV-BW scales with scores of r = 0.32-0.55 and with the SF-36 Mental Component Summary with scores of r = 0.32-0.53. The CSQ-D is a precisely translated and highly reliable instrument in the assessment of chronic pain coping strategies. Its concurrent criterion-related validity and construct validity are low. The main reason for the low level of agreement between the CSQ-D and the FESV-BW was revealed by factor analysis. PERSPECTIVE: This paper presents the German version of the Coping Strategies Questionnaire (CSQ-D) together with the results of clinimetric testing. The CSQ-D is a feasible and reliable outcome measure to be used in trials with German-speaking patients or large multicenter multinational trials to assess pain coping strategies in patients with chronic musculoskeletal pain.

Adaptation, Psychological↗
PubMed2006

Reliability of a repeated-sprint test for field-hockey.

The purpose of this study was to assess the reliability of a repeated-sprint test, specifically designed for field-hockey, as it was based directly on the time-motion analysis of elite level competition. The test consisted of 6 x 30-m over-ground sprints departing on 25s, with an active recovery (approximately 3.1-3.3 ms(-1)) between sprints. Ten highly trained, male, field-hockey players (mean+/-S.D.: age, 23+/-3 years; body mass, 78.1+/-7.1 kg) participated in this study. Following familiarisation, the subjects performed the repeated-sprint test on two occasions, 7 days apart. The reliability of the test variables was assessed by the typical error of measurement (TE). The total sprint time was very reliable (T(1): 26.79+/-0.76 s versus T2: 26.83+/-0.74 s), as the TE was 0.7% (95% CL, 0.5-1.2%). However, the percent sprint decrement was less reliable (T1: 5.6+/-0.9% versus T2: 5.8+/-1.0%), with the TE being 14.9% (95% CL, 10.8-31.3%). In summary, it is suggested that this field-hockey-specific, repeated-sprint test is very reliable when the results are presented as the total sprint time.

Adult↗
PubMed2006

Reliability and validity of the Chinese version of IPAQ (short, last 7 days).

The aim of this study was to examine the reliability and validity of the Chinese version of the International Physical Activity Questionnaire (IPAQ-C). The IPAQ-C was administered three times to each participant to examine the stability and reliability of the self-reported physical activity, whilst data to examine concurrent validity were acquired over 7 consecutive days using a physical activity log (PA-log), and an MTI accelerometer. A complete set of data was obtained from 49 Chinese residents (range 15-55 years; 30 males). The total physical activity recorded by IPAQ-C was acceptably reliable (ICC of 0.79 and %CV of 26%). There was weak agreement between IPAQ-C and the total MTI-derived activity and any of its constituent sub-components. Better agreement was seen between IPAQ-C and the PA-log data, with no significant difference between average total activity (3931 and 4047 MET min week(-1), respectively, p=0.51), and a bias and LOA of 3% and 94% of the mean score, respectively. Although these statistics are not dissimilar to those reported on other self-report physical activity questionnaires, suggesting the IPAQ-C is adequately reliable and valid for the measurement of total physical activity in a Chinese population, care needs to be taken, especially as the sub-components of total activity were markedly less valid and reliable.

Adolescent↗