Dong Pang

Survival from cancer in teenagers and young adults in England, 1979–2003

Cancer is the leading cause of disease-related death in teenagers and young adults aged 13–24 years (TYAs) in England. We have analysed national 5-year relative survival among more than 30 000 incident cancer cases in TYAs. For cancer overall, 5-year survival improved from 63% in 1979–84 to 74% during 1996–2001 (P<0.001). However, there were no sustained improvements in survival over time among high-grade brain tumours and bone and soft tissue sarcomas. Survival patterns varied by age group (13–16, 17–20, 21–24 years), sex and diagnosis. Survival from leukaemia and brain tumours was better in the youngest age group but in the oldest from germ-cell tumours (GCTs). For lymphomas, bone and soft tissue sarcomas, melanoma and carcinomas, survival was not significantly associated with age. Females had a better survival than males except for GCTs. Most groups showed no association between survival and socioeconomic deprivation, but for leukaemias, head and neck carcinoma and colorectal carcinoma, survival was significantly poorer with increasing deprivation. These results will aid the development of national specialised service provision for this age group and identify areas of clinical need that present the greatest challenges.

Fatigue: a principal contributor to impaired quality of life in ANCA-associated vasculitis

OBJECTIVES To describe quality of life (QoL) in an ANCA-associated vasculitis (AAV) cohort and make comparisons with a general population sample. In addition, we aimed to take preliminary steps to identify potential disease and psycho-social factors which may determine QoL impairment. METHODS A population-based case-control study was designed. All AAV patients resident in Grampian, Scotland, were invited to participate as cases. Controls were identified from a random sample of persons registered with four local general practices. Participants completed a questionnaire comprising validated generic and symptom-specific tools in the assessment of QoL. In addition, all cases were clinically assessed and putative disease factors recorded. Cases and controls were compared and, in addition, disease and psycho-social associations were explored for identified QoL impairments. RESULTS In total, 74/90 (82%) cases and 781/2000 (39%) controls participated. Cases reported a significant impairment in physical health (P < 0.0001), but not mental health (P = 0.85), compared with controls, as measured by Short Form-8 (SF-8). Following adjustment for age and sex, persons with AAV were more than twice as likely to report mild/moderate fatigue [odds ratio (OR) 2.0; 95% CI 1.1, 3.8] or severe fatigue (OR 2.5; 95% CI 1.4, 4.5) compared with controls. Furthermore, among cases, fatigue was found to be strongly associated with impaired physical health (P < 0.0001), while disease factors such as disease activity and damage were not (P = 0.60 and 0.27, respectively). CONCLUSIONS Patients with AAV report impaired physical but not mental health. Specifically, fatigue is a principal complaint and appears to be a major determinant of impaired QoL.

Influence of childhood behaviour on the reporting of chronic widespread pain in adulthood: results from the 1958 British Birth Cohort Study

OBJECTIVES To determine whether childhood behaviour is associated with the likelihood of chronic widespread pain (CWP) in adulthood, and any such relationship is mediated through adult psychological distress, using a large population-based birth cohort. METHODS A prospective cohort study (the 1958 British Birth Cohort) was conducted. Participants were enrolled at birth in 1958, and followed up throughout childhood and adulthood. Data on childhood behaviour were collected from parents and teachers. Data regarding pain were collected at the age of 45 years by self-completion questionnaire. Risk ratios (RRs) and 95% CIs were estimated using Poisson regression, adjusting for gender, social class in childhood and adulthood, childhood common symptoms and adult psychological distress. RESULTS CWP was slightly more common in adult females than males (12.9 vs 11.7%). There was an increased likelihood of reporting CWP at the age of 45 years with every unit increase in teacher-reported behaviour score at 16 (RR 1.04; 95% CI 1.02, 1.05), 11(RR 1.02; 95% CI 1.01, 1.03) and 7 years (RR 1.01; 95% CI 1.00, 1.02) of age. Those with scores indicating severe behaviour disturbances at 11 and 16 years of age had an increased likelihood of CWP in adulthood (RR 1.95; 95% CI 1.47, 2.59 and RR 1.69; 95% CI 1.18, 2.42, respectively). The strongest association was seen among those indicating persistent behaviour problems at 7, 11 and 16 years (RR 2.14; 95% CI 1.43, 3.21) of age, compared with those without at all three ages. Similar but slightly weaker associations were shown for parent-reported behaviour. CONCLUSION Maladjusted (social) behaviour is associated with increased long-term CWP beyond childhood and adolescence.

No association between prenatal viral infection and depression in later life - a long-term cohort study of 6152 subjects.

Objective: Previous studies have suggested a role for prenatal viral infections in the etiology of schizophrenia; however, little is known about depression. We examined whether in-utero viral infections result in increased risk of depression in later life. Method: We identified a cohort (n = 3076) born between 1946 and 1980, whose mothers suffered known viral infections in pregnancy. Subjects were individually matched by birthdate, sex, and area of birth to another cohort (n = 3076) from the UK National Health Service Central Register (NHSCR). These 2 cohorts, one exposed to viruses prenatally, the other not known to have been exposed, were then followed-up to June 1996 by sending a morbidity questionnaire to their primary care physicians. This included specific items on affective disorders, schizophrenia, mental handicap (mental retardation), epilepsy, as well as other central nervous system disorders and specified physical illness, all coded according to the International Classification of Diseases, Ninth Edition. Death certificates were supplied by the NHSCR. A method for matched-pair cohort data calculated the relative risk and 95% confidence intervals for depression in the exposed and unexposed cohorts by varying type of viral exposure. Results: The response to the questionnaire was high (85%). There was no overall increased risk for depression associated with viral exposure; a narrow confidence interval surrounded unity (RR = 1.0, 95% CI 0.8 to 1.2); effects for individual viral exposures were all scattered around unity. Conclusions: The results provide no support for the hypothesis that in-utero exposure to viral infection is associated with risk of subsequent nonpsychotic affective disorder. Further analyses on schizophrenia, bipolar disorder, and mental illness other than depression are required.

Maternal Influenza and Schizophrenia in the Offspring

(2000). Maternal Influenza and Schizophrenia in the Offspring. International Journal of Mental Health: Vol. 29, Risk Factors for Schizophrenia and Implications for Prevention—2, pp. 3-21.

Prevalence of low back pain and associated occupational factors among Chinese coal miners

BackgroundVery few studies have evaluated the association between occupational factors and low back pain (LBP) among miners. The epidemiological data on LBP in Chinese miners are limited. The aim of this study was to measure the prevalence of low back pain in Chinese coal miners and to investigate the role of occupational factors.MethodsA cross-sectional survey was conducted to examine 1573 coal miners in northern China. The prevalence of LBP over a 12-month period was assessed using the Nordic Musculoskeletal Questionnaire. Odds ratios were calculated to examine the association between the prevalence of LBP over a 12-month period and occupational factors using logistic regression.ResultsAmong the coal miners, 64.9% self-reported LBP in a 12-month period. Occupational factors associated with LBP were identified, including tasks with a high degree of repetitiveness (OR 1.3, 95%CI 1.0-1.6), tasks characterized by a high level of physical demand (OR 1.4, 95% CI 1.1-1.8), posture requiring extreme bending (OR 1.6, 95% CI 1.2-1.7) and insufficient recovery time (OR 1.4, 95% CI 1.0-1.8).ConclusionLow back pain is common among Chinese miners. There were strong associations with occupational factors.

Is there an association between preterm birth or low birthweight and chronic widespread pain? Results from the 1958 Birth Cohort Study

The aim was to examine the relationship between gestational age and birthweight and adult chronic widespread pain (CWP).

Cancer risks among relatives of children with Hodgkin and non‐Hodgkin lymphoma

A role for genetic susceptibility in the aetiology of childhood lymphomas was investigated in 454 families of children with histologically confirmed Hodgkin lymphoma (HL) and non‐Hodgkin lymphoma (NHL) from Northwest England. Cancers in parents were obtained from the UK National Health Service Central Register and in other close relatives by interview with the parents. The cancer incidence among relatives was compared with expected incidence based on cancer registry data for England. There were 197 cancers in relatives (SIR 1.0 95% CI 0.8–1.1). In families of children with HL, there was an excess of HL in the first degree relatives (SIR 5.8 95% CI 1.2–16.9). Excesses of HL diagnosed under population median age (SIR 4.1 95% CI 1.1–10.6) were seen among all relatives and relatives of children who were below the median age at diagnosis (SIR 5.5 95% CI 1.1–16.0). In families of children with NHL, there were non‐significant excesses of central nervous system (CNS) tumours in the first degree relatives (SIR 2.9 95% CI 0.8–7.4) and in the second and third degree relatives (SIR 1.5). There were significant excesses of CNS tumours diagnosed under the population median age (SIR 2.8 95% CI 1.1–5.8) in all relatives. Excess CNS tumours were also seen among relatives of children below the median age at diagnosis (SIR 3.2 95% CI 1.1–7.6). In conclusion, genetic susceptibility in some families of children with lymphoma might be operating, but aetiologies in HL and NHL appear to be different. Possible interpretations of our findings, in the context of putative genetic and infectious aetiologies, are discussed.

Maternal and perinatal risk factors for childhood cancer: record linkage study.

Objective To investigate maternal and perinatal risk factors for childhood cancer. Study design Case–control analysis of linked records from the Aberdeen Maternity and Neonatal Databank with the Scottish Cancer Registry and the General Registry of Births and Deaths in Scotland was carried out. Setting Aberdeen, Scotland. Participants Cases (n=176) comprised children diagnosed with cancer under 15 years or recorded as having died of cancer. Four controls per case were matched by age and gender. Risk factors tested Maternal age, body mass index, social class, marital status and smoking as well as pre-eclampsia, antepartum haemorrhage and previous miscarriage, gestational age, birth weight and Apgar scores were compared between groups to test for association with cancer. ORs with 95% CIs were calculated using conditional logistic regression in univariable and multivariable models. Results Of the maternal characteristics tested, mothers age at delivery (cases mean 28.9 (SD 5.6) years vs controls mean 30.2 (SD 4.6), p=0.002) and smoking status (38.6% smokers among cases, 29.7% among controls, p=0.034) were found to be different between groups. Of the perinatal factors tested, low Apgar score at 5 min (adjusted OR (AOR) 4.59, 95% CI 1.52 to 13.87) and delivery by caesarean section (AOR 1.95, 95% CI 1.30 to 2.92) showed statistically significant associations with childhood cancer in the multivariable model. Conclusions Younger maternal age, maternal smoking, delivery by caesarean section and low Apgar score at 5 min were independently associated with increased risk of childhood cancer. These general findings should be interpreted with caution as this study did not have the power to detect any association with individual diagnostic categories of childhood cancer.

Introducing the Palliative Performance Scale to clinicians: the Grampian experience

Objectives The Palliative Performance Scale (PPS) was introduced across NHS Grampian. Our aim was to determine how practical and useful the PPS was for clinicians looking after palliative patients in a variety of settings. Methods A prospective audit approach was used in primary, secondary and nursing home care settings who. Demographic and assessment data were gathered for 3 months; feedback was gathered at the end of the data collection phase. Patient follow-up status was determined at 12 months. Results Fifteen clinical sites participated and feedback was obtained from all clinical areas (n=30). Most respondents found the PPS easy to use and that it helped recognise disease progression in cancer patients, but not in patients with dementia/frailty. Assessment data were gathered on 666 patients. Sixty per cent had a malignant diagnosis and 62.5% of the sample died within 12 months. Lower PPS scores at initial assessment indicated poorer prognosis. Median survival figures differed from previously published data. Falling PPS scores increased the risk of death compared with patients whose PPS scores remained static or improved. Conclusion Clinicians found the PPS to be a quick, useful way of assessing and reviewing functional changes in palliative patients. However, it may not identify the subtle changes in individuals with advanced dementia. The survival figures confirm that caution is needed in generalising survival data across different settings and populations. Further work is needed to examine changing functional status in patients with non-malignant diseases or dementia/frailty.