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Biomedical subjects

R J Lancashire

Publications and source records attributed to R J Lancashire.

At least 19 recordsLinked to original sources
PubMed2005

Systemic hypertension and glaucoma: mechanisms in common and co-occurrence.

AIMS: To determine whether systemic hypertension and glaucoma might coexist more often than expected, with possible implications for treatment. METHODS: Case-control study using general practitioner database of patients with glaucoma matched with controls for age and sex. RESULTS: Hypertension was significantly more common in the 27,080 patients with glaucoma (odds ratio 1.29, 95% confidence intervals 1.23 to 1.36, p<0.001) than in controls. Treatment by oral beta blockade appeared to protect from risk (odds ratio 0.77, 95% CI 0.73 to 0.83, p<0.0001), but oral calcium channel antagonists or angiotensin converting enzyme (ACE) inhibitors did not (odds ratios 1.34, 1.24 to 1.44 and 1.16 1.09-1.24, respectively, p<0.0001 in each case). Oral corticosteroid treatment was associated with enhanced risk (odds ratio 1.78, 1.61 to 1.96). CONCLUSION: Common pathogenetic mechanisms in ciliary and renal tubular epithelia may explain coincidence of glaucoma and systemic hypertension. The choice of cardiovascular treatment, could substantially influence glaucoma incidence, with beta blockade protecting and ACE inhibitors or calcium channel blockers not affecting underlying risk.

Administration, Oral↗
PubMed2004

Parental cigarette smoking and childhood risks of hepatoblastoma: OSCC data.

Reported cigarette smoking habits for the parents of 43 UK children who died with hepatoblastoma (1953-55 deaths, 1971-81 deaths) have been compared with corresponding information for the parents of 5777 healthy control children by means of unconditional logistic regression. Hepatoblastoma risks were doubled if both parents smoked relative to neither parent smoking (RR 2.28, 95% CI 1.02-5.09).

Case-Control Studies↗
PubMed2003

Cancer in the offspring of radiation workers: an investigation of employment timing and a reanalysis using updated dose information.

An earlier case-control study found no evidence of paternal preconceptional irradiation (PPI) as a cause of childhood leukaemia and non-Hodgkin's lymphoma (LNHL). Although fathers of children with LNHL were more likely to have been radiation workers, the risk was most marked in those with doses below the level of detection. The timing of paternal employment as a radiation worker has now been examined. The previously reported elevated risk of LNHL in the children of male radiation workers was limited to those whose fathers were still radiation workers at conception or whose employment also continued until diagnosis. Children whose fathers stopped radiation work prior to their conception were found to have no excess risk of LNHL. It was not possible to distinguish between the risks associated with paternal radiation work at conception and at the time of diagnosis. A reanalysis of the original study hypothesis incorporating updated dosimetric information gave similar results to those obtained previously. In particular, the risks of LNHL did not show an association with radiation doses received by the father before conception. It seems likely that the increased risk of LNHL among the children of male radiation workers is associated with an increased exposure to some infective agent consequent on high levels of population mixing.

Adolescent↗
PubMed2003

Breastfeeding and childhood cancer risks: OSCC data.

Matched pair analysis relating to 3376 mothers of children who died of cancer 1972-1981 and of healthy control children from the Oxford Survey of Childhood Cancers showed no evidence of protection from breastfeeding for acute lymphocytic leukaemia (OR 1.04, 95% CI 0.86-1.26), for all cancers combined (OR 1.04, 95% CI 0.93-1.15) or for other groupings. Analyses by duration of breastfeeding also failed to support the protective hypothesis.

Breast Feeding↗
PubMed2003

Discrepancies between population-based data and adverse reaction reports in assessing drugs as causes of acute pancreatitis.

BACKGROUND: Many drugs are believed, clinically, to cause acute pancreatitis. We used information held on the UK General Practitioner Research Database to compare risks for drugs for which reports of pancreatitis were common or uncommon. METHODS: Drug prescriptions were examined in 3673 patients with acute pancreatitis and in matched controls. Odds ratios were calculated for recent (1-90 days before the episode), past (91-360 days before the episode) or continuing (prescription in both periods) use. RESULTS: Odds ratios were markedly increased for recent antisecretory use in non-ulcer patients only [all H2-antagonists, 12.4 (9.5-16.4); all proton pump antagonists, 9.3 (6.6-13.0)], with smaller increases for past [3.1 (2.5-3.7) and 3.5 (2.6-4.6), respectively] and continuing [2.6 (2.2-3.1) and 3.7 (2.9-4.7), respectively] use in patients without ulcer. Recent users of mesalazine showed a markedly increased risk [9.0 (1.8-44.6)], with smaller increases in past and continuing users [4.5 (1.3-16.0) and 2.5 (1.2-5.0), respectively]. Odds ratios for other drugs, suspect or not, were modestly increased, irrespective of whether the use was recent, past or continuing. The presence of gall-stones was not associated with a modified risk. CONCLUSIONS: Mesalazine, azathioprine and antisecretory drugs in non-ulcer subjects may increase the risk of pancreatitis, but warnings of drug-induced pancreatitis are generally not accompanied by increased population risks.

Acute Disease↗
PubMed2003

Redesigning postnatal care: a randomised controlled trial of protocol-based midwifery-led care focused on individual women's physical and psychological health needs.

OBJECTIVES: To develop, implement and test the cost-effectiveness of redesigned postnatal care compared with current care on women's physical and psychological health. DESIGN: A cluster randomised controlled trial, with general practice as the unit of randomisation. Recruited women were followed up by postal questionnaire at 4 and 12 months postpartum and further data collected from midwife and general practice sources. SETTING: Thirty-six randomly selected general practice clusters in the West Midlands Health Region, UK. PARTICIPANTS: All women expected to be resident within recruited practices for postnatal care were eligible for inclusion. Attached midwives recruited 1087 women in the intervention and 977 in the control practice clusters. INTERVENTIONS: The systematic identification and management of women's health problems, led by midwives with general practitioner contact only when required. Symptom checklists and the Edinburgh Postnatal Depression Scale (EPDS) were used at various times to maximise the identification of problems, and individual care and visit plans based on needs. Evidence-based guidelines were used to manage needs. Care was delivered over a longer period. MAIN OUTCOME MEASURES: Women's health at 4 and 12 months, assessed by the Physical and Mental Component Scores (PCS and MCS) of the Short-Form 36 (SF-36) and the EPDS. Women's views about care, reported morbidity at 12 months, health service usage during the year, 'good practice' indicators and health professionals' views about care were secondary outcomes. RESULTS: At 4 and 12 months postpartum the mean MCS and EPDS scores were significantly better in the intervention group and the proportion of women with an EPDS score of 13+ (indicative of probable depression) was significantly lower relative to controls. The physical health score (PCS) did not differ. Health service usage was significantly less in the intervention group as well as reported psychological morbidity at 12 months. Women's views about care were either more positive or did not differ. Intervention midwives were more satisfied with redesigned care than control midwives were with standard care. Intervention care was cost-effective since outcomes were better and costs did not differ substantially. CONCLUSIONS: The redesigned community postnatal care led by midwives and delivered over a longer period, resulted in an improvement in women's mental health at 4 months postpartum, which persisted at 12 months and at equivalent overall cost. It is suggested that further research should focus on: the identification of postnatal depression through screening; whether fewer adverse longer term effects might be demonstrated among the children of the women who had the intervention care relative to the controls; testing interventions to reduce physical morbidity, including studies to validate measures of physical health in postpartum women. Further research is also required to investigate appropriate postnatal care for ethnic minority groups.

Adolescent↗
PubMed2002

Prevalence of left ventricular systolic dysfunction and heart failure in high risk patients: community based epidemiological study.

OBJECTIVES: To determine the prevalence of left ventricular systolic dysfunction, and of heart failure due to different causes, in patients with risk factors for these conditions. DESIGN: Epidemiological study, including detailed clinical assessment, electrocardiography, and echocardiography. SETTING: 16 English general practices, representative for socioeconomic status and practice type. PARTICIPANTS: 1062 patients (66% response rate) with previous myocardial infarction, angina, hypertension, or diabetes. MAIN OUTCOME MEASURES: Prevalence of systolic dysfunction, both with and without symptoms, and of heart failure, in groups of patients with each of the risk factors. RESULTS: Definite systolic dysfunction (ejection fraction <40%) was found in 54/244 (22.1%, 95% confidence interval 17.1% to 27.9%) patients with previous myocardial infarction, 26/321 (8.1%, 5.4% to 11.6%) with angina, 7/388 (1.8%, 0.7% to 3.7%) with hypertension, and 12/208 (5.8%, 3.0% to 9.9%) with diabetes. In each group, approximately half of these patients had symptoms of dyspnoea, and therefore had heart failure. Overall rates of heart failure, defined as symptoms of dyspnoea plus objective evidence of cardiac dysfunction (systolic dysfunction, atrial fibrillation, or clinically significant valve disease) were 16.0% (11.6% to 21.2%) in patients with previous myocardial infarction, 8.4% (5.6% to 12.0%) in those with angina, 2.8% (1.4% to 5.0%) in those with hypertension, and 7.7% (4.5% to 12.2%) in those with diabetes. CONCLUSION: Many people with ischaemic heart disease or diabetes have systolic dysfunction or heart failure. The data support the need for trials of targeted echocardiographic screening, in view of the major benefits of modern treatment. In contrast, patients with uncomplicated hypertension have similar rates to the general population.

Angina Pectoris↗
PubMed2002

Effects of redesigned community postnatal care on womens' health 4 months after birth: a cluster randomised controlled trial.

BACKGROUND: Much postpartum physical and psychological morbidity is not addressed by present care, which tends to focus on routine examinations. We undertook a cluster randomised controlled trial to assess community postnatal care that has been redesigned to identify and manage individual needs. METHODS: We randomly allocated 36 general practice clusters from the West Midlands health region of the UK to intervention (n=17) or control (19) care. Midwives from the practices recruited women and provided care. 1087 (53%) of 2064 women were in practices randomly assigned to the intervention group, with 977 (47%) women in practices assigned to the control group. Care was led by midwives, with no routine contact with general practitioners, and was extended to 3 months. Midwives used symptom checklists and the Edinburgh postnatal depression scale (EPDS) to identify health needs and guidelines for the management of these needs. Primary outcomes at 4 months were obtained by postal questionnaire and included the women's short form 36 physical (PCS) and mental (MCS) component summary scores and the EPDS. Secondary outcomes were women's views about care. Multilevel analysis accounted for possible cluster effects. FINDINGS: 801 (77%) of 1087 women in the intervention group and 702 (76%) of 977 controls responded at 4 months. Women's mental health measures were significantly better in the intervention group (MCS, 3.03 [95% CI 1.53-4.52]; EPDS -1.92 [-2.55 to -1.29]; EPDS 13+ odds ratio 0.57 [0.43-0.76]) than in controls, but the physical health score did not differ. INTERPRETATION: Redesign of care so that it is midwife-led, flexible, and tailored to needs, could help to improve women's mental health and reduce probable depression at 4 months' postpartum.

Adult↗
PubMed2001

Prevalence of left-ventricular systolic dysfunction and heart failure in the Echocardiographic Heart of England Screening study: a population based study.

BACKGROUND: Accurate data for prevalence rates for heart failure due to various causes, and for left-ventricular systolic dysfunction in all adults are unavailable. Our aim was to assess prevalence of left-ventricular systolic dysfunction and heart failure in a large representative adult population in England. METHODS: Of 6286 randomly selected patients aged 45 years and older, 3960 (63%) participated in the study. They came from 16 randomly selected general practices. We assessed patients by history and examination, electrocardiography, and echocardiography. Prevalence of left-ventricular systolic dysfunction (defined as ejection fraction <40%) and heart failure was calculated for the overall population on the basis of strict criteria and, when necessary, adjudication by a panel. FINDINGS: Left-ventricular systolic dysfunction was diagnosed in 72 (1.8% [95% CI 1.4-2.3]) participants, half of whom had no symptoms. Borderline left-ventricular function (ejection fraction 40-50%) was seen in 139 patients (3.5% [3.0-4.1]). Definite heart failure was seen in 92 (2.3%, [1.9-2.8]) and was associated with an ejection fraction of less than 40% in 38 (41%) patients, atrial fibrillation in 30 (33%), and valve disease in 24 (26%). Probable heart failure was seen in a further 32 (0.8% [0.6-1.1]) patients. In total, 124 (3.1% [2.6-3.7]) patients aged 45 years or older had definite or probable heart failure. INTERPRETATION: Heart failure is often misdiagnosed or underdiagnosed in primary care. Our results suggest that assessment of left-ventricular function in patients with suspected heart failure could lead to more effective diagnosis and treatment of this disorder.

Aged↗
PubMed2001

Childhood cancer and parental use of tobacco: findings from the inter-regional epidemiological study of childhood cancer (IRESCC).

Parental smoking data have been re-abstracted from the interview records of the Inter-Regional Epidemiological Study of Childhood Cancer (IRESCC) to test further the hypothesis that paternal cigarette smoking is a risk factor for the generality of childhood cancer. Reported cigarette smoking habits for the parents of 555 children diagnosed with cancer in the period 1980-1983 were compared, in two separate matched pairs analyses, with similar information for the parents of 555 children selected from GP lists (GP controls) and for the parents of 555 hospitalized children (hospital controls). When cases were compared with GP controls there was a statistically significant positive trend (P = 0.02) between the risk of childhood cancer and paternal daily consumption of cigarettes before the pregnancy; there was no significant trend for maternal smoking habit. When cases were compared with hospital controls there was a statistically significant negative trend (P< 0.001) between the risk of childhood cancer and maternal daily consumption of cigarettes before the pregnancy; there was no significant trend for paternal smoking habit. Neither of the significant trends could be explained by adjustment for socioeconomic grouping, ethnic origin or parental age at the birth of the child, or by simultaneous analysis of parental smoking habits. Relations between maternal consumption of cigarettes and birth weights suggested that (maternal) smoking data were equally reliable for case and control subjects, although comparisons with national data suggested that the hospital control parents were unusually heavy smokers. These findings give some support for the hypothesis that paternal cigarette smoking is a potential risk factor for the generality of childhood cancers.

Adult↗
PubMed2001

Effects at age nine of maternal smoking in pregnancy: experimental and observational findings.

OBJECTIVES: To compare long term outcomes of a randomised controlled trial of anti-smoking education in pregnancy and to examine the same outcomes according to maternal pregnancy smoking behaviour. DESIGN: Follow up of the population included in the randomised controlled trial nine years later and of ex-smokers and non-smokers within the same hospital population. SETTING: A maternity hospital in Birmingham with follow up of children in schools and mothers at home. POPULATION: 1218 smokers recruited to the trial; also 191 ex-smokers at booking and 414 non-smokers throughout pregnancy. METHODS: Children were assessed individually by psychologists in schools, and mothers interviewed at home to obtain additional information relevant to cognitive development and growth. Information on smoking during pregnancy was obtained from mothers and obstetric data from computerised case-notes, both recorded immediately following delivery. MAIN OUTCOME MEASURES: Height, weight, IQ and neurological soft signs at 9.4 years. RESULTS: Differences in birthweight and length between the intervention and control groups were confirmed but no intervention-control differences were found at age 9.4 for weight, height, IQ or neurological soft signs. Differences were found for height and IQ according to mothers pregnancy smoking behaviour, but smoking did not remain an independent predictor after taking account of confounding factors. Alternative classifications of smoking behaviour, taking account of the gestation at stopping and mean cigarette consumption throughout pregnancy likewise showed no effect. CONCLUSIONS: The well established early hazards of smoking during pregnancy seem to be resolved by later childhood, with no evidence of direct long term effects on growth or cognitive functioning.

Birth Weight↗
PubMed2000

Effect of anti-inflammatory drugs on overall risk of common cancer: case-control study in general practice research database.

OBJECTIVE: To examine whether anti-inflammatory drug treatment protects against the commoner cancers in the United Kingdom. DESIGN: Case-control study using the general practice research database. SETTING: Practices throughout United Kingdom providing data to the database. SUBJECTS: Patients who had a first diagnosis of five gastrointestinal (oesophagus, stomach, colon, rectum, and pancreas) cancers and four non-gastrointestinal (bladder, breast, lung, and prostate) cancers in 1993-5 for whom prescription data were available for the at least the previous 36 months. Each case was matched for age, sex, and general practice with three controls. MAIN OUTCOME MEASURE: Risk of cancer. RESULTS: In 12 174 cancer cases and 34 934 controls overall risk of the nine cancers was not significantly reduced among those who had received at least seven prescriptions in the 13-36 months before cancer diagnosis (odds ratio 0.98, 95% confidence interval 0.89 to 1.07). Findings were nevertheless compatible with protective effects from anti-inflammatory drugs against cancers of the oesophagus (0.64, 0. 41 to 0.98), stomach (0.51, 0.33 to 0.79), colon (0.76, 0.58 to 1. 00), and rectum (0.75, 0.49 to 1.14) with dose related trends. The risk of pancreatic cancer (1.49, 1.02 to 2.18) and prostatic cancer (1.33, 1.07 to1.64) was increased among patients who had received at least seven prescriptions, but the trend was dose related for only pancreatic cancer. CONCLUSIONS: Anti-inflammatory drugs may protect against oesophageal and gastric cancer as well as colon and rectal cancer. The increased risks of pancreatic and prostatic cancer could be due to chance or to undetected biases and warrant further investigation.

Anti-Inflammatory Agents, Non-Steroidal↗
PubMed1999

Association between stress and glycemic control in adults with type 1 (insulin-dependent) diabetes.

OBJECTIVE: To examine the relationship between stressful life events and alterations in glycemic control in adults with diabetes. RESEARCH DESIGN AND METHODS: The occurrence of stressful experiences was recorded using the life Events and Difficulties Schedule of Brown and Harris in 55 adults with type 1 diabetes. The two most recent measures of glycemic control (HbA1c) were obtained from medical records, with poor glycemic control defined by the sample median (> or =7.7%). RESULTS: Subjects whose control deteriorated over time or who remained in poor glycemic control were significantly more likely to report severe personal stressors (SPS) in the month before HbA1c measurement, compared with subjects whose control remained fair or whose control improved (43 and 25% vs. 7 and 0%; P = 0.000). Subjects whose control remained fair or whose control improved were significantly more likely to report only positive life events during the same time period (80 and 11% vs. 0 and 0%, respectively; P = 0.000). Multiple regression analysis demonstrated that SPS, sex, and lack of further education were all significantly associated with either remaining in poor control or deterioration of control. CONCLUSIONS: The study has shown that recent severe stressors are associated with poorer glycemic control. Positive life events were associated with fair or improved glycemic control. This study has its limitations, and future studies should be prospective in design. While it is not always possible to avoid stress, learning to recognize and cope with stressors may help individuals with diabetes maintain good glycemic control and improve overall quality of life.

Adult↗
PubMed1998

Factors associated with clinic non-attendance in adults with type 1 diabetes mellitus.

In order to examine the causes of non-attendance in a diabetic clinic, a 1-year retrospective casenote review of 259 diabetic patients with no evidence of major complications was undertaken. Frequency of clinic attendance, clinic non-attendance, and glycaemic control (HbA1c) were recorded. In a sub-sample of 82 patients, more detailed demographic data was obtained via questionnaire. During the previous year 39% of patients had failed to attend the clinic on at least one occasion and 10% were recurrent non-attenders. Non-attenders had a significantly higher mean HbA1c compared with those who did attend (8.1 +/- 2.2 vs 7.6 +/- 1.6%; p = 0.03). They were also significantly younger (mean age 27 + 7 vs 29 +/- 9 yrs; p = 0.02) and had a significantly shorter duration of diabetes (12 +/- 8 vs 15 +/- 10 yrs; p = 0.02). Attendance did not differ according to gender or age of onset of diabetes. Sub-sample analysis showed that smokers, those with children at home, and single parents were all more likely to default from their appointments. Non-attendance is a significant problem at our diabetic clinic, however, by addressing the reasons why patients fail to attend clinic we hope to develop strategies to encourage regular attendance. This may be translated into improved glycaemic control and ultimately reduce the risk of late diabetic complications.

Adolescent↗
PubMed1998

What influences the uptake and early cessation of breast feeding?

OBJECTIVE: To examine obstetric, maternal and social factors associated with the uptake and early cessation of breast feeding and women's reasons for altering from breast to bottle feeding. DESIGN: Women who responded to a postal questionnaire on long-term postpartum health were contacted and asked to participate in a home-based interview. In addition to health problems, the interview obtained information on baby feeding and a number of social factors. Women were also asked to complete the Edinburgh Postnatal Depression Scale (EPDS). Obstetric and maternal data were obtained from maternity records. SETTING: Deliveries from a large maternity hospital in Birmingham. PARTICIPANTS: 906 women were interviewed at a mean of 45 weeks after delivery. FINDINGS: 63% of the women said they had breast fed, but 40% of these stopped within three months of delivery. Many of the women gave physical problems with lactation as reasons for stopping. The factors found to be predictors of early cessation were: return to work within three months of birth; regular childcare support from other female relatives, and a high EPDS score. Non-initiation of breast feeding was predicted by a different set of factors: multiparity; general anaesthetic (GA); and unmarried status. DISCUSSION AND CONCLUSION: Despite evidence of the benefits of breast feeding, this remains an unacceptable long-term option for many women, and for over one-third it is never attempted. Factors within the woman's social environment were found to influence early cessation. Women who had a GA during or immediately following labour and delivery were less likely to initiate breast feeding. IMPLICATIONS FOR PRACTICE: If breast-feeding incidence and duration are to increase, more attention should be paid to establishing early, successful breast feeding and countering the negative influences of factors within the social environment.

Adult↗
PubMed1998

A follow-up of repair of ruptured uterus in Ethiopia.

The uterus was conserved and repaired in 238 of 245 mothers admitted with ruptured uterus to a rural hospital in Ethiopia between 1991 and 1995. The patients have been followed for intervals varying from 6 years and 3 months to 1 year and 11 months since treatment of their rupture. One hundred and eleven mothers have given birth to 117 healthy babies. All mothers are well. Repair of uterine rupture is medically safe and culturally acceptable to the population served, provided the mothers are willing to spend the latter months of subsequent pregnancies in the maternity waiting area.

Journal Article↗
PubMed1998

Can women at risk of cervical abnormality be identified?

OBJECTIVE: To determine if use of a detailed risk factor profile accurately predicts the presence of cytological abnormality of the cervix or improves the appropriateness of referral for colposcopic assessment when women are found to have these abnormalities. DESIGN: Cross-sectional survey. SETTING: Family planning clinic. POPULATION: 1219 consecutive women, aged between 15 and 19 years, attending for contraceptive advice. Variables included age, social class, educational status, hormonal and obstetric history, smoking and alcohol habits, history of sexually transmitted diseases, the age of first intercourse, number of sexual partners, duration of each relationship, frequency of intercourse, contraception used and the age of each partner. MAIN OUTCOME MEASURES: Presence or absence of cytological abnormality and the presence or absence of histological abnormality in those with cytological abnormality referred for colposcopic assessment. RESULTS: Univariate analysis confirmed many of the known associations of cervical abnormality. Discriminant analysis identified five independent significant predictors of cytological abnormality and four independent predictors of dyskaryotic cytology. At best models, derived from identified variables correctly predicted 10.1% of individuals with cytological abnormality and 13.5% of those with dyskaryotic cytology. Of those referred for colposcopic assessment because of abnormal cytology, models were able to predict 23.5% of those with histological evidence of cervical intraepithelial neoplasia. CONCLUSIONS: Despite the availability of detailed information regarding the known correlates of cervical neoplasia in this age group, it was not possible to identify the majority of women with cervical abnormality. It is concluded that the strength of these associations is not sufficient to allow useful prediction of membership of a high risk group.

Adolescent↗