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PubMed2002

Analysis of matched mRNA measurements from two different microarray technologies.

MOTIVATION: [corrected] The existence of several technologies for measuring gene expression makes the question of cross-technology agreement of measurements an important issue. Cross-platform utilization of data from different technologies has the potential to reduce the need to duplicate experiments but requires corresponding measurements to be comparable. METHODS: A comparison of mRNA measurements of 2895 sequence-matched genes in 56 cell lines from the standard panel of 60 cancer cell lines from the National Cancer Institute (NCI 60) was carried out by calculating correlation between matched measurements and calculating concordance between cluster from two high-throughput DNA microarray technologies, Stanford type cDNA microarrays and Affymetrix oligonucleotide microarrays. RESULTS: In general, corresponding measurements from the two platforms showed poor correlation. Clusters of genes and cell lines were discordant between the two technologies, suggesting that relative intra-technology relationships were not preserved. GC-content, sequence length, average signal intensity, and an estimator of cross-hybridization were found to be associated with the degree of correlation. This suggests gene-specific, or more correctly probe-specific, factors influencing measurements differently in the two platforms, implying a poor prognosis for a broad utilization of gene expression measurements across platforms.

Cluster Analysis↗
PubMed2003

A comparison of assistive technology and personal care in alleviating disability and unmet need.

PURPOSE: The authors examine differences in reports of residual disability and unmet need by type of long-term care arrangement (assistive technology or personal care). DESIGN AND METHODS: This study compares three specific dimensions of residual difficulty (pain, fatigue, and time intensity) and reports of unmet need across care arrangements. Samples from the U. S. 1994-1995 National Health Interview Survey Phase 2 Disability Supplements include adults with limitations in bathing, transferring, walking, and getting outside. RESULTS: Even when differences in underlying disability are accounted for, assistive technology (AT) confers no additional benefit in the three dimensions of residual difficulty analyzed here. AT users equally or more often report that tasks are tiring, time consuming, or painful, even when they use assistance. Though this would appear to indicate unmet needs for care, fewer AT users report a desire for hands-on personal care. IMPLICATIONS: Though disability alleviation by technology is no better on specific dimensions of difficulty, technology users report less unmet need for personal care. Designing appropriate and cost-effective home care for adults with disabilities requires a better understanding of the ways in which technology users may differ from others and the circumstances under which technology can be most effective.

Activities of Daily Living↗
PubMed1993

Toward a hierarchy of adaptation to biomedical technology.

The article attempts to derive a hierarchy of patient adaptation for a variety of technologic devices that are used in medical and nursing care. A review of related literature on some existing taxonomies of biomedical technology and an empiric foundation based on Roy's Adaptation Model suggest that patient adaptation to biomedical devices is affected by at least two factors--the degree of invasiveness and automation--that are inherent in all bedside devices. It appears that patients' need for adaptation to technology is more apparent as automation decreases and invasiveness increases. Further research is necessary to determine whether this relationship holds for all types of technology and to identify additional factors that might contribute to the development of an adaptation hierarchy for technologic devices. The nurse's role as a mediator of stress between the patient and technology is also explored.

Adaptation, Psychological↗
PubMedDate not supplied

Student perspectives on transitioning to new technologies for distance learning.

This article reports on students' perceptions of their learning experiences when an existing distance-learning master's program transitions to new technologies and new instructional strategies. Unique elements addressed in this article include (1) findings when a program with extensive experience delivering distance education changes to new technologies and (2) findings when a multidimensional format is used to evaluate program delivery. The technology changes involved migrating from a satellite-based technician-supported videoconferencing system to a land-based faculty-operated videoconferencing system and the addition of class Web materials and asynchronous computer conferencing to course delivery. The multidimensional evaluation format examined student experiences within the context of specific interactions among instructional activities, technology applications, and desired learning outcomes. The evaluation process involved (1) open-ended and structured items in course surveys and (2) an end-of-year student focus group discussion. A formative evaluation approach was used; this article reports on efforts to address the problems identified. Findings include (1) program planners should not assume that prior institutional experiences with distance education facilitate a smooth transition to use of different technologies and (2) a formative multidimensional approach to program evaluation is critical for understanding student experiences with technology-mediated distance education.

Adaptation, Psychological↗
PubMed2003

Laterality of the performance of glaucoma mass screening using frequency-doubling technology.

PURPOSE: This study investigated laterality during the performance of glaucoma mass screening with a frequency-doubling technology perimetry test. MATERIALS AND METHODS: A frequency-doubling technology screening mode (C-20-1, version 2.6) test was performed on both eyes of 14,784 persons. Subjects with visual field abnormalities detected by the frequency-doubling technology test or with fixation error underwent retesting without a specified interval for rest. Consequently, 206 subjects who fulfilled the screening criteria of the frequency-doubling technology-based glaucoma screening protocol [FDT-GSP(+)] were further investigated using the Humphrey visual field analyzer (30-2). As a result, 74 right eyes and 57 left eyes were shown to have definite glaucoma. RESULTS: Frequency-doubling technology data for the left eye demonstrated a significantly (P<0.001) higher rate of artifacts, such as no reproducibility of results between the first and second tests (left/right: 2.4%/1.7%) as well as fixation errors (left/right: 2.8%/1.0%). The false-positive rate of the FDT-GSP for glaucoma was more than 1.5-fold higher in the left eye than in the right eye (16.3%/9.8%). In the case that either eye exhibited FDT-GSP(+), the positive predictive value of the FDT-GSP for definite glaucoma in the left eye was almost half of that in the right eye (28.4% vs. 53.8%). Specificity of the FDT-GSP for detection of definite glaucoma also exhibited a lower trend (P = 0.097) in the left eye (44.6%) than in the right eye (55.3%), but the sensitivity of the test was similar in both eyes (91.2% vs. 90.5%, respectively). CONCLUSIONS: When frequency-doubling technology-based mass screening is performed on the general population, performance is lower for the left eye than for the right eye. This performance disparity is likely to be primarily associated with a difference in specificity.

Adult↗
PubMed2004

Adoption of information technology by resident physicians.

The Internet represents a technological revolution that is transforming our society. In the healthcare industry, physicians have been typified as slow adopters of information technology. However, young physicians, having been raised in a computer-prevalent society, may be more likely to embrace technology. We attempt to characterize the use and acceptance of the Internet and information technology among resident physicians in a large academic medical center and to assess concerns regarding privacy, security, and credibility of information on the Internet. A 41-question survey was distributed to 150 pediatric, medical, and surgical residents at an urban, academic medical center. One hundred thirty-five residents completed the survey (response rate of 90%). Responses were evaluated and statistical analysis was done. The majority of resident physicians in our survey have adopted the tools of information technology. Ninety-eight percent used the Internet and 96% use e-mail. Two-thirds of the respondents used the Internet for healthcare-related purposes and a similar percentage thought that the Internet has affected their practice of medicine positively. The majority of residents thought that Internet healthcare services such as electronic medical records, peer-support websites, and remote patient monitoring would be beneficial for the healthcare industry. However, they are concerned about the credibility, privacy, and security of health and medical information online. The majority of resident physicians in our institution use Internet and information technology in their practice of medicine. Most think that the Internet will continue to have a beneficial role in the healthcare industry.

Adult↗
PubMed2005

Is laparoscopy necessary before assisted reproductive technology?

PURPOSE OF REVIEW: Laparoscopy is widely used during infertility work-up, although it is sometimes unnecessary. This review highlights when laparoscopic intervention should be used in women undergoing assisted reproductive technology cycles. RECENT FINDINGS: There is no evidence for an increase in pregnancy rates in assisted reproductive technology cycles following surgical treatment of pelvic adhesions or endometriosis with laparoscopy. If the patient has bilateral visible hydrosalpinges, laparoscopy may be an option for evaluation of the tubes and treatment with salpingectomy in order to enhance the chance of pregnancy before commencing an assisted reproductive technology cycle. Laparoscopic ovarian drilling before assisted reproductive technology may be considered a therapeutic option in polycystic ovary disease patients who previously had severe ovarian hyperstimulation syndrome. Finally, laparoscopy may be useful in replacing the transposed ovaries to their original sites in the pelvic cavity in previously treated cancer patients so that monitoring of the controlled ovarian hyperstimulation and the oocyte aspiration would be much easier during the assisted reproductive technology cycles. SUMMARY: Laparoscopy should be considered before assisted reproductive technology cycles if the procedure diagnoses and treats a pelvic pathology at the same time and if laparoscopic intervention increases the chance of pregnancy following these cycles.

Endometriosis↗
PubMed2005

Detecting glaucoma with frequency-doubling technology perimetry: a comparison between N-30 and C-20 screening programs.

PURPOSE: To evaluate the ability of frequency-doubling technology (FDT) perimetry in detecting glaucoma with N-30 and C-20 screening programs. METHODS: Eighty eyes of 80 patients were enrolled (40 glaucomatous, 40 controls). Humphrey achromatic perimetry (standard automated perimetry, SAP) was considered as the "gold standard" for diagnosis. To assess whether N-30 screening program could detect more initial glaucomatous defects than C-20, glaucomatous patients included 20 cases with nasal step at SAP (pre-selected by medical chart inspection). Patients underwent two SAP examinations to confirm diagnosis; then two N-30 and two C-20 screening tests with frequency-doubling technology were performed in a randomized sequence. Finally, a frequency-doubling technology N-30 full-threshold examination was performed. Several criteria to define abnormality at frequency-doubling technology screening programs were evaluated. RESULTS: For both C-20 and N-30 screening programs, the best parameter to detect glaucoma was the presence of at least 1 point with P < 5% (sensitivity = 87.5% for both tests and specificity of 90% and 95% for C-20 and N-30, respectively). Both screening procedures obtained a lower sensitivity (75%) in patients with a nasal step, whereas frequency-doubling technology full-threshold program was able to detect the initial defects in all cases. CONCLUSIONS: N-30 and C-20 screening procedures obtained similar results in well-defined glaucoma patients in terms of sensitivity and specificity. In the presence of a standard automated perimetry nasal step, diagnostic ability with both frequency-doubling technology screening strategies decreased and one quarter of nasal steps went undetected.

Aged↗
PubMed2006

Prediction of visual field defects on standard automated perimetry by screening C-20-1 frequency doubling technology perimetry.

PURPOSE: To determine if perimetric defects, initially seen with C-20-1 frequency doubling technology (FDT) in eyes with normal standard automated perimetry (SAP), will subsequently develop on standard automated perimetry. METHODS: Review of patients considered high-risk glaucoma suspects (GS) or with ocular hypertension (OHT), who underwent one C-20-1 FDT in 1997 or 1998. An abnormal frequency doubling technology was defined in two ways, as having either at least one, or at least two abnormal locations. An abnormal standard automated perimetry was defined as fulfilling two of three modified Anderson criteria for abnormality on two consecutive tests and at final standard automated perimetry. RESULTS: Of 63 eyes (50 patients), 18 (28.6%) had >or=1 FDT defects, and 12 (19.0%) had >or=2 defects. After follow-up of 62 +/- 26 months, an abnormal standard automated perimetry developed in 5 eyes (28%) with frequency doubling technology defects at 22 +/- 13 months (28% of eyes with >or=1 defect and 42% of eyes with >or=2 FDT defects), and in 4 of 45 eyes (9%) with normal frequency doubling technology at 32 +/- 30 months. Kaplan-Meier survival analysis revealed the risk of an abnormal standard automated perimetry at 5 years with or=1 defects, and >or=2 defects, was 10.3%, 11.8%, 30.6%, and 46.4% respectively (P = 0.060 for >or=1 defects compared with no defects; P = 0.002 for >or=2 defects compared with <or=1 defect). CONCLUSIONS: Abnormal results on C-20-1 frequency doubling technology perimetry predicted glaucomatous visual field loss on standard automated perimetry in some patients in this patient population, though a relatively high false positive rate was noted. Abnormality on C-20-1 frequency doubling technology warrants close observation, and further prospective evaluation is warranted.

Aged↗
PubMed2006

Development of the new Family Impact of Assistive Technology Scale.

Children with physical disabilities generally require more care, attention and direct supervision than children without disabilities. Research demonstrates that these higher care-giving demands are associated with poorer psychological and physical health states for parents and other family members. Assistive technologies may have a role in mitigating caregiver stress and burden by improving functional performance, social interaction and autonomy in children with physical disabilities. In this paper, we report on the initial development and testing of the Family Impact of Assistive Technology Scale - a new measure designed to detect the multidimensional effect of assistive device use on families who have young children with disabilities. To study the content validity and face validity of the Family Impact of Assistive Technology Scale, we conducted structured evaluations of the proposed constructs and items with 14 clinical experts and parents of young children with cerebral palsy. Experts agreed that the Family Impact of Assistive Technology Scale contains the key variables needed to study the effect of assistive technology use on child and family functioning. Parents concurred that items on the preliminary version were relevant and clear. Further research is planned to estimate the reliability and other aspects of validity of the Family Impact of Assistive Technology Scale.

Caregivers↗
PubMed2000

The influence of trust and perceptions of risks and benefits on the acceptance of gene technology.

A causal model explaining acceptance of gene technology was tested. It was hypothesized that trust in institutions using gene technology or using modified products has a positive impact on perceived benefit and a negative influence on perceived risk of this technology. Furthermore, perceived benefit and perceived risk determine acceptance of biotechnology. In other words, trust has an indirect influence on the acceptance of the technology. The postulated model was tested using structural equation modeling procedures and data from a random quota sample of 1001 Swiss citizens between 18 and 74 years old. Results indicated that the proposed model fits the data very well. The same causal model explains females' and males' acceptance of gene technology. Gender differences were found for the latent variables trust, perceived benefit, and acceptance of gene technology. Females indicated more trust, perceived less benefit, and demonstrated less acceptance than did males. No significant difference was observed for perceived risk. The implications of the results are discussed.

Adolescent↗
PubMedDate not supplied

Unmanaged care: the need to regulate new reproductive technologies in the United States.

In the aftermath of allegations of the misuse of human eggs in the United States, questions are being raised about whether profitable reproductive services should continue to function in a free market under the aegis of physicians or should be regulated. Other countries in which reproductive technologies are employed to a significant degree have developed regulations governing their use, many as a result of recommendations made by inter-disciplinary commissions that solicited public input. Policy makers in the United States have been reluctant to regulate reproductive technologies, however, because their use is politically controversial, they want to whittle down government, some do not consider infertility an illness, and some believe regulation would interfere with the right to reproduce. Yet the unfettered use of reproductive technologies can create such harms as lack of informed consent, providing procedures not medically indicated for financial gain, practice by unqualified personnel, injury to patients and donors, failure to screen donated gametes, and inadequate medical record keeping. Americans place special value on the welfare of children and those who bring them into the world. Such values can outweigh individual procreative liberty when new reproductive technologies are at issue. Although the optimal course would be to establish a regulatory body to govern reproductive technologies, this is not politically feasible now. The newly established National Bioethics Advisory Commission provides a forum in which issues surrounding reproductive technologies should be addressed at this time in the United States.

Advisory Committees↗
PubMed2005

Current reproductive technologies: increased access and choice?

This article discusses key issues related to current reproductive technologies including contextual and personal barriers to use, complexity of decision making, limited access to technologies for poor women and women of color, and the politics and social controversy surrounding this area. New reproductive technologies have to be put to the same test as any other product--can and will women use them correctly? We need to not only know about the technology itself; we also need to know about the individuals who intend to use the technology and about contextual factors that influence use. Accordingly, the articles in this issue focus on the multiple determinants that influence acceptability of reproductive technologies and the policy, political, and legal implications associated with their use.

Abortion, Induced↗
PubMed2004

The use of technology at home: what patient manuals say and sell vs. what patients face and fear.

Over the past 15 years, the use of specialised medical equipment by patients at home has increased in most industrialised countries. Adopting a conceptual framework that brings together two research perspectives, i.e. the sociology of technology and the sociology of illness, this paper empirically examines why and how patients use health technology at home and in the broader social world. Our study compares and contrasts the use of four interventions: antibiotic intravenous therapy, parenteral nutrition, peritoneal dialysis and oxygen therapy. We conducted interviews with patients (n = 16) and caregivers (n = 6), and made direct observations of home visits by nurses (n = 16). The content and structure of patient manuals distributed by major manufacturers and hospitals were analysed (n = 26). The aim of our study was to determine how technology was supposed to be used versus how it was actually used. This study shows that patients are deeply ambivalent about the benefits and drawbacks of technology, and that these advantages and disadvantages are shaped by the various places in which the technology is used. While technology can be pivotal in making patients autonomous and able to participate in the social world, it also imposes heavy restrictions that are intimately interwoven with the nature of the particular disease and with the patient's personal life trajectory.

Adaptation, Psychological↗
PubMed2005

Families' experiences of caring for technology-dependent children: a temporal perspective.

In the present study, families' experiences of caring for a technology-dependent child were examined from a temporal perspective. This involved exploring the multiple 'technological', 'social' and 'natural' rhythms and routines around which the families' lives were variously structured. A purposive sample of 36 families with technology-dependent children who used one or more medical devices on a daily basis was recruited. Devices included feeding pumps, suction machines, dialysis machines and ventilators. Using mainly qualitative methods, children, parents and siblings were interviewed to establish what the care routines involved and how these impacted on family members. The authors found that the rhythms and routines of care varied across the sample, depending on the type and number of devices used, the individual child's needs, and who provided technical care during the day and/or at night at home and in other settings. While the children's health and quality of life benefited from the technology, the time demands of the care routines and lack of compatibility with other social and institutional timeframes had some negative implications for the children and their families, limiting their participation in school, employment and social life in general. The need to use and oversee the use of some medical technologies at night also meant that many parents suffered regular disruption to their sleep. In conclusion, the authors argue that the care of technology-dependent children at home places considerable time demands on families. Families have little or no access to suitably trained carers who can provide technical care required in the home or away from the home to give parents and the whole family a break from caring where required. More trained carers and short-term care provision, better coordination of services and improvements in the design of devices would all help to reduce the negative effects of the care routines on families.

Adolescent↗
PubMed1997

Exploring the gender-technology relation in nursing.

Feminist and nursing scholars have emphasized the critical role Western technology has played in the history and development of women and nursing. Yet, despite their common ground in tying both the emancipation and the subordination of women and nurses to technology, there has been virtually no association between nursing and gender-technology studies. Gender-technology studies offer nursing scholars new analytic directions and methodological tools to explore the nursing-technology relation. Nursing, in turn, offers gender-technology studies a rich empirical site to further its theoretical development.

Female↗
PubMed2004

Apheresis technologies and clinical applications: the 2002 international apheresis registry.

The developments in apheresis technologies and techniques and their clinical applications worldwide are technologically, sociologically, and economically motivated. In past apheresis surveys, the statistics have highlighted both the differences by geographic region in clinical practice and in the types of technologies utilized. While a national view of apheresis is very important, an international view may be more representative overall of this therapeutic modality than national results that are highly dependent on the local economics and the available technologies. These regional differences have provided a basis for scientific and clinical assessment of these apheresis technologies and their clinical outcomes and have impacted the marketing and business developments of new technologies worldwide. The results of the International Apheresis Registry for 2002, reporting on 33 centers on four continents, are presented. The survey collected data, predominantly via an internet website, on 811 patients for a total of 11 428 treatments. Information gathered included patient demographics, medical history, treatment diagnoses, treatment specifics (type, methodology, access type, anticoagulants, drugs, and equipment usage), side-effects, clinical response, and payment provider. As in the prior International Apheresis Registries for 1983 and 2000, the survey results highlight the regional differences in apheresis usage and treatment specifics, indicating that an international overview of apheresis may be more representative of the impact of this therapeutic modality.

Adult↗
PubMed1993

Genetic screening technology: ethical issues in access to tests by employers and health insurance committees.

Whereas the introduction of new technologies previously has raised the ethical question of who ought to have access to a new procedure or device, genetic testing technology raises the new ethical question of to whom access to a new technology ought to be limited. In this article we discuss the implications of employers and private health insurance companies having access to genetic testing technology. Although there may be legitimate business interests in allowing employers and insurers to conduct genetic screening, there are other valid societal interests in regulating or limiting the use of this technology by third parties. Public policy developed in the area of new genetic technology must reflect such interests.

Employment↗