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Biomedical subjects

J Lumley

Publications and source records attributed to J Lumley.

At least 55 records · Page 3Linked to original sources
PubMed1998

Epidemiological approaches to infertility.

There are a number of reasons why epidemiological approaches to infertility have not made a major contribution to research in Australia. They include the success of generic treatments, the high public profile of infertility and the consequent polarization of discussion over treatment versus prevention, some reluctance to draw attention to possible aetiologic factors which may be perceived negatively in public debates, and the lack of graduate training in reproductive and perinatal epidemiology. Voluntary infertility is now common for most of the fertile life span in developed countries, and intended family size is small. Many important conditions cannot be diagnosed without the use of invasive procedures or complex investigations, and the more widespread use of less invasive procedures has shown other conditions to be relatively common in healthy populations. If epidemiological approaches are to make a greater contribution towards an increased understanding and control of infertility, research should focus on retrospective and prospective cohort studies of the incidence and prevalence of infertility, nested case-control studies of occupational and environmental exposures, and an extension of the developing use of record-linkage across routinely collected data systems and registers.

Epidemiologic Methods↗
PubMed1998

Are cuts to health expenditure in Victoria compromising quality of care?

Separate state-wide surveys of women who had recently given birth in Victoria were conducted in 1989 and 1993. The first survey was conducted in conjunction with the Victorian Ministerial Review of Birthing Services. The second survey occurred three years after the release of the Review's final report and three months after the introduction of casemix funding. It coincided with a period of substantial cutbacks to expenditure on Victorian public hospitals. In both studies, surveys were mailed to women 6 to 9 months after the birth. Response rates were 71.4% (n = 790) in 1989 and 62.5% (n = 1336) in 1993. Between the two surveys, the proportion of women giving critical feedback about caregivers, more than doubled. The survey findings suggest that standards of care are being compromised in the current economic and policy environment.

Delivery Rooms↗
PubMed1998

Changing childbirth: lessons from an Australian survey of 1336 women.

OBJECTIVE: To investigate the views and experiences of care in labour and birth of a representative sample of women who gave birth in Victoria, Australia in 1993. DESIGN: Cross-sectional survey mailed to women 6-7 months after giving birth. POPULATION: All women who gave birth in a two week period in Victoria, Australia in September 1993, except those who had a stillbirth or neonatal death. RESULTS: After adjusting for parity, the risk status of the pregnancy, and social and obstetric factors, specific aspects of care with the greatest negative impact on the overall rating of intrapartum care were: caregivers perceived as unhelpful (midwives: adjusted OR 12.03 [95% CI 7.8-18.6], doctors: adjusted OR 6.76 [95% CI 4.4-10.3]); and having an active say in decisions only sometimes, rarely or not at all (adjusted OR 8.90 [95% CI 4.9-16.1]). In a separate regression analysis including parity, risk status, obstetric and social factors, but not specific aspects of care, factors associated with dissatisfaction with intrapartum care included: participation in shared antenatal care programme (adjusted OR 1.89 [95% CI 1.2-3.0]) and being of nonEnglish speaking background (adjusted OR 1.70 [95% CI 1.1-2.6]). The following factors lowered the odds of dissatisfaction: attending a birth centre (adjusted OR 0.34 [95% CI 0.1-1.0]) and knowing the midwives before going into labour (adjusted OR 0.68 [95% CI 0.5-0.9]). CONCLUSION: The survey demonstrates the potential for 'new' models of care to have either positive or negative effects on women's experiences of care. Evaluation of innovations in perinatal care taking into account women's views is a prerequisite for improvements in maternity care.

Attitude to Health↗
PubMed1998

Maternal health after childbirth: results of an Australian population based survey.

OBJECTIVE: To describe the prevalence of maternal physical and emotional health problems six to seven months after birth. DESIGN: Statewide postal survey, incorporating the Edinburgh Postnatal Depression Scale, distributed to women six to seven months after childbirth. PARTICIPANTS: All women who gave birth in a two-week period in Victoria, Australia in September 1993 except those who had a stillbirth or known neonatal death. RESULTS: The response rate was 62.5% (n = 1336). Respondents were representative of the total sample in terms of mode of delivery, parity and infant birthweight; young women, single women and women of nonEnglish speaking background were under-represented. One or more health problems in the first six postnatal months were reported by 94% of the women; a quarter had not talked to a health professional about their own health since the birth. Of women reporting health problems, 49% would have liked more help or advice. The most common health problems were tiredness (69%), backache (43.5%), sexual problems (26.3%), haemorrhoids (24.6%) and perineal pain (21%); 16.9% of women scored as depressed. Compared with spontaneous vaginal births, women having forceps or ventouse extraction had increased odds for perineal pain (OR 4.69 [95% CI 3.2-6.8]), sexual problems (OR 2.06 [95% CI 1.4-3.0]), and urinary incontinence (OR 1.81 [95% CI 1.1-2.9]). These differences remained significant after adjusting for infant birthweight, length of labour and degree of perineal trauma. CONCLUSION: Physical and emotional health problems are common after childbirth, and are frequently not reported to health professionals despite the fact that many women would like more advice and assistance in dealing with them.

Delivery, Obstetric↗
PubMed1998

Does an early postnatal check-up improve maternal health: results from a randomised trial in Australian general practice.

OBJECTIVES: To investigate whether a visit to a general practitioner one week after discharge results in less depression, increased breastfeeding rates, improved patient wellbeing, fewer physical problems and greater satisfaction with general practice care than the traditional six week postnatal check-up. DESIGN: A randomised controlled trial. SETTING: Rural and metropolitan Victoria, Australia. Population Women giving birth at one rural and one metropolitan hospital between February and December 1995 inclusive. METHODS: All women received a letter and appointment date to see a general practitioner for a check-up: the intervention group for one week after hospital discharge, the control group for six weeks after birth. A mail-out survey was conducted at three and six months after birth, including Edinburgh Postnatal Depression Scale and Short Form 36. RESULTS: 1017/1407 (72.3%) women giving birth at participating hospitals were eligible for the trial: 683 (67.2%) gave informed consent. The average response rate to postal follow up at three and six months was 67.5%. No significant differences were found between the groups in: Edinburgh Postnatal Depression and Short Form 36 scores; number of problems; breastfeeding rates; or satisfaction with general practitioner care. Women in the intervention group were less likely to attend for their check-up (76.4% vs 88.4%; P = 0.001), more likely to discuss labour and birth at their check-up (OR= 1.77, 95% CI 1.17-2.68), less likely to have a vaginal examination (OR = 0.51; 95%, CI 0.34-0.77) or pap smear (OR = 0.34; 95% CI = 0.22-0.52) at their check; more likely to report difficulties with low milk supply (OR= 1.72; 95% CI = 1.12-2.66) and adjusting to the demands of a new baby (OR = 1.76; 95% CI 1.13 2.74), more likely to talk to a general practitioner about their baby (68.2% vs 58.0%; P=0.02) and less likely to consult a hospital doctor about their baby (7.3% vs 14.0%, P = 0.02). CONCLUSIONS: To make clinically important improvements in maternal health more is required than early postnatal review.

Breast Feeding↗
PubMed1998

Early obstetric discharge: does it make a difference to health outcomes?

Clinicians in several countries have expressed concerns about possible adverse effects of shortening obstetric length of stay. A population-based survey of 1366 mothers who gave birth in Victoria, Australia, in 1993 was used to investigate social and obstetric characteristics of mothers discharged home 'early', and to assess whether shorter stays were associated with adverse health outcomes, or a lesser degree of satisfaction, or both. Women's views and experiences of length of hospital stay were gathered via a statewide postal survey of women who gave birth in a 2-week period; 62.5% (n = 1336) responded. Assessment of the relationship between length of stay (1-2 days vs. > or = 5 days, and 3-4 days vs. > or = 5 days) and four main outcome measures (infant feeding at 6 weeks, period prevalence of feeding problems, maternal confidence and depression) showed no association between these variables and length of stay after adjusting for other obstetric and social factors in separate regression analyses. For stays of 3-4 days, the adjusted odds ratio (OR) for formula feeding at 6 weeks was 1.35 [95% confidence interval (CI) 0.9-1.9]; for feeding problems OR = 0.87 [0.7-1.2]; for lacking confidence OR = 0.81 [0.6-1.2]; and for depression OR = 0.96 [0.7-1.4]. Large randomised trials of early obstetric discharge are required to resolve continuing uncertainties about the safety, and possible benefits of shorter hospital stays.

Breast Feeding↗
PubMed1998

Involvement of Victorian general practitioners in obstetric and postnatal care.

OBJECTIVE: To assess the current nature and extent of general practice (obstetric) involvement and the effect of gender on the provision of maternity care in Victoria. METHOD: A postal survey to a community derived sample of 1104 Victorian general practitioners (with oversampling of female GPs) in August 1994 with hierarchical data analysis techniques used to account for the clustered (divisional) nature of the sampling frame. RESULTS: A 70% response rate was achieved (715 out of an eligible sample of 1022). Three hundred and sixty-two (45.6%) GPs were providing shared care, 127 (17.7%) intrapartum care and 656 (92%) were involved in seeing women for their routine 6 week postnatal checkup. Male and female GPs were equally qualified and as likely to be vocationally registered (90% vs 92%). Female GPs were less likely than male GPs (11% vs 25%) to be involved in intrapartum care (OR = 0.4, 95% CI = 0.3-.06). Female GPs were more likely than male GPs (50% vs 41%) to be involved in shared care (OR = 1.4, 95% CI = 1.01-2.0), and postnatal care (OR = 3.7, 95% CI = 2.5-5.4). Provincial city (population > 15,000) GPs were more likely to provide shared care than other GPs. Fifty-two per cent of GPs providing shared care held a Diploma of Obstetrics. After accounting for the gender differences associated with practice location, rural GPs were more likely to provide intrapartum care (OR = 10.6, 95% CI = 3.5-32.4). CONCLUSION: General practitioners play an important role in all facets of maternity care. Female and male GPs differ in their type of obstetric practice. If GPs are to maintain an intrapartum role, prompt action is required to increase the number of GPs involved in intrapartum care. The training requirements for shared care should be reviewed and a more suitable postnatal care curriculum should be developed.

Adult↗
PubMed1998

The role of the general practitioner in postnatal care: a survey from Australian general practice.

BACKGROUND: Despite the practice of routine postnatal check-ups, many women experience problems in the months after childbirth. General practitioners (GPs) are involved in routine postnatal care, yet little research has been undertaken to explore this role. AIM: To report the views of Australian GPs as to what physical examination and discussion should take place at the routine six week postnatal check-up and to determine the influence of gender on the approach to the check-up. METHOD: Postal survey of 1104 Australian GPs, yielding an eligible sample of 1022. RESULTS: A total of 715/1022 (70%) usable surveys returned. Over 65% of GPs recommend routine examination of the abdomen, blood pressure, perineum, vagina, pelvic floor, and breasts at the six week check-up. Fewer than a half the sample believed that physical problems (urine and bowel symptoms, back problems), sexual issues, relationship and parenting issues should be routinely discussed. After controlling for age, practice location, obstetric practice, and qualifications, the sex of the GP remains an important factor influencing the GP's approach to postnatal care. Female GPs are three times more likely to believe that maternal feelings should be discussed routinely and about twice as likely to believe that infant sleeping/behaviour, maternal sleeping/diet/tiredness, coping with other children, relationship with partner, and household work should form part of the routine discussion with all recent mothers. CONCLUSIONS: Sex of practitioner and older age (60 years or more) are the two most important influences on a GP's approach to postnatal care. This study indicates a need for GPs to shift their focus from routine examination to indicated examination to allow more time to discuss common postnatal problems.

Adult↗
PubMed1997

Laparoscopic colectomy.

BACKGROUND: Laparoscopic colectomy has developed with the explosion of technology that has followed laparoscopic cholecystectomy. Accumulation of skills in general laparoscopic surgery has made complex surgery, such as colectomy, feasible. METHODS: Three hundred fifty-nine laparoscopic cases were prospectively studied. Data has been kept on benign and malignant cases, operative results, hospital stay, and morbidity. Special care has been taken to follow malignant cases, looking for recurrence of disease. RESULTS: There were 359 cases (206 females, 153 male) average age 58.8 years (18-94), and 149 patients had malignancy. All types of resections were performed, including 151 anterior resections, 66 right hemicolectomies (RHC), 36 total colectomies, and 22 rectopexies. Operating times fell with experience-the last 20 cases of anterior resection took 150 min (110-240) and of RHC took 130 min (65-210). Twenty-six (7%) cases were converted to open surgery. Hospital stays for anterior resection lasted 5-7 days (2-33); in the last 20 cases the average stay was 4 days. Morbidity included seven leaks (2.7%), four strictures (1.2%), 12 wound infections (3.3%), and nine ileus (2.5%). There were six deaths within 30 days-sepsis, myocardial infarction, aspiration pneumonia, and disseminated liver metastases. One hundred forty-nine cancer cases have had ten recurrences: one pelvic recurrence, six liver metastases, two para-aortic nodal, and one case of disseminated disease. Average time of recurrence was 33 months (15-46 months). CONCLUSIONS: Laparoscopy in the hands of experienced laparoscopic surgeons is a safe, efficient procedure. All types of procedures are possible. Early results in 149 malignancies are encouraging and recurrence rates are low. Prospective studies, now that skills are developed to a level comparable to that of open surgery, are now being performed to further assess laparoscopy's possible role in treating cancer.

Adolescent↗
PubMed1997

Where does venous reflux start?

PURPOSE: This study was designed to identify the origin of lower limb primary venous reflux in asymptomatic young individuals and to compare patterns of reflux with age-matched subjects with prominent or clinically apparent varicose veins. METHODS: Forty age- and sex-matched subjects with no symptoms (age, 15 to 35 years; 80 limbs; group A), 20 subjects (age, 19 to 32 years; 40 limbs) with prominent but nonvaricose veins (n = 26 limbs; group B), and 50 patients (age, 17 to 34 years; 100 limbs) with varicose veins (n = 64; group C) were examined with color flow duplex imaging. All proximal veins (above popliteal skin crease), superficial, perforator, and deep, in the lower limb were examined in the standing position, and all the distal veins in the sitting position. Patients who had a documented episode of superficial or deep vein thrombosis, previous venous surgery, or injection sclerotherapy were excluded from the study. RESULTS: The prevalence of reflux in group A was 14% (11 of 80), in group B 77% (31 of 40), and in group C 87% (87 of 100). In more than 80% of limbs in the three groups, reflux was confined to the superficial veins alone. Deep venous reflux or combined patterns of reflux were uncommon even in group C. Reflux was detected in all segments of the saphenous veins and their tributaries. In the 125 limbs that had superficial venous incompetence, the below-knee segment of the greater saphenous vein was the most common site of reflux (85, 68%), followed by the above-knee segment of greater saphenous vein (69, 55%) and the saphenofemoral junction (41, 32%). Nonsaphenous reflux was rare (3, 2.4%). Reflux in the lesser saphenous vein (21, 17%) was seen in all groups, whereas involvement of both greater and lesser saphenous veins (8, 6.4%) was seen in group C alone. The incidence of multisegmental reflux was significantly higher in group C (61 of 64, 95%) than in group A (two of 11, 18%) or group B (14 of 26, 54%). The prevalence of distal reflux was comparable in all groups. CONCLUSIONS: Primary venous reflux can occur in any superficial or deep vein of the lower limbs. The below-knee veins are often involved in asymptomatic individuals and in those who have prominent or varicose veins. These data suggest that reflux appears to be a local or multifocal process in addition to or separate from a retrograde process.

Adolescent↗
PubMed1997

The 1993 Survey of Recent Mothers: issues in survey design, analysis and influencing policy.

The 1993 Survey of Recent Mothers was a statewide postal survey of 2224 women who gave birth in Victoria in 2 weeks in 1993, excepting those who had a stillbirth or whose baby was known to have died. The survey questionnaire was mailed to women 6-7 months after the birth. The response rate, excluding duplicate responses, one woman who had a stillbirth and those whose questionnaires were returned unknown at the mailing address, was 62.5% (1336/2138). The questionnaire covered care in pregnancy, birth and the first 6 months. In each section, women were asked to give an overall rating of care, and to answer questions on specific aspects of care. Closed and open-ended questions were included. The paper discusses the advantages and disadvantages of the study design, the processes used for developing the questionnaire, methodological issues in analysis using both quantitative and qualitative methods, and relevance of the study to policy.

Adolescent↗
PubMed1997

Trends in stillbirths and neonatal deaths for very pre-term infants (< 32 weeks' gestation) born in Victoria, 1986-1993.

We have examined the trends in stillbirth rates and neonatal mortality rates of infants of 20-31 weeks' gestational born in Victoria during 1986-1993 (n = 6,462), using data from the Victorian Perinatal Data Collection Unit. Seventy four percent of all infants and 83% of all liveborn infants were born in level 3 hospitals. Both stillbirth and neonatal mortality rates were lower for infants of higher gestational ages, and those born in level 3 hospitals. During 1986-1993, annual stillbirth rates remained steady, with mean values of 61.2%, 40.2%, 24.7%, 16.0%, and 11% for infants of gestational ages 20-23, 24-25, 26-27, 28-29, and 30-31 weeks, respectively. The neonatal mortality rates decreased from 76.1 to 38.6%, 42.3 to 17.6%, 12.9 to 6.0%, and 8.4 to 3.7% for liveborn infants of gestational ages 24-25, 26-27, 28-29, and 30-31 weeks, respectively. The time-related falls in neonatal mortality were not due to changes in Caesarean section rates, intubation rates, or the proportions of infants born in, or transferred to, level 3 hospitals. They probably reflect continuing improvements in perinatal care.

Cesarean Section↗
PubMed1997

Reasons to stay, reasons to go: results of an Australian population-based survey.

BACKGROUND: Debate about early obstetric discharge is occurring simultaneously in several different countries. An Australian population-based survey of recent mothers investigated women's views about shorter postnatal stays and assessed the impact of early discharge on important maternal health outcomes. METHOD: Women's views and experiences of length of hospital stay were gathered by means of a statewide postal survey of all women who gave birth in Victoria, Australia, during two weeks in 1993. Questionnaires were mailed to women 6 to 7 months after the birth; 62.5 percent (n = 1336) responded. RESULTS: Most of the sample (64%) stayed in hospital for 5 or more days after the birth, 26.6 percent left on day 3 or 4, and 9.4 percent on day 1 or 2. Compared with women who stayed for 5 or more days, women who left in the first 48 hours were more likely to be multiparous; to have attended public models of care (public hospital clinic, shared care, public general practitioner, birth center); not to have private health insurance; to have experienced a lower level of obstetric intervention; and to have a very low income. Twenty-one percent of women who left within 48 hours, and 26 percent of those who left on day 3 or 4 described their stay as too short. Women who left on day 3 or 4, or within 48 hours, were not more likely to experience any of the adverse outcomes investigated in the study: breastfeeding problems, low confidence about caring for the baby, or depression 6 to 7 months after birth. Women who left on day 3 or 4 had slightly lower rates of breastfeeding at 3 and 6 months than women staying for longer or shorter periods. CONCLUSION: Concerns about possible adverse outcomes resulting from shorter postnatal stays were not borne out by the study findings. Large and carefully designed randomized trials are needed to resolve continuing uncertainties about the safety and possible benefits of shorter hospital stays.

Adult↗
PubMed1997

A surgical approach to coexistent coronary and carotid artery disease.

OBJECTIVE: To assess the early results of combined coronary artery bypass graft surgery and carotid endarterectomy. DESIGN: Retrospective and ongoing analysis of patients who underwent combined coronary artery bypass graft surgery and carotid endarterectomy. SETTING: Cardiothoracic unit in a London teaching hospital. PATIENTS: From June 1987 to March 1995, 64 patients were identified. They were patients who were scheduled to have coronary artery bypass graft surgery or required urgent coronary revascularisation and who were found to have significant coexistent carotid disease. (Unilateral carotid stenosis > 70%, bilateral carotid stenosis > 50%, or unilateral carotid stenosis > 50% with contralateral occlusion.) INTERVENTIONS: Both procedures were performed during one anaesthesia: the carotid endarterectomy was performed first without cardiopulmonary bypass. After completion of carotid endarterectomy, coronary artery bypass graft surgery was performed. MAIN OUTCOME MEASURES: The incidence of stroke, transient ischaemic attack, and myocardial infarction in the early postoperative period was analysed. RESULTS: Myocardial revascularisation was successful in all 64 patients. There were no perioperative infarcts. In three patients (4.7%) a new neurological deficit developed postoperatively: two recovered fully before hospital discharge. CONCLUSIONS: Combined coronary artery bypass graft surgery and carotid endarterectomy were performed safely and with good results.

Aged↗