Identification of UK sickness certification rates, standardised for age and sex.

BACKGROUND: There is growing interest in tackling the perceived 'sick note' culture in the UK. AIM: The aim of this paper was to report the rates of sickness certification in a UK population, using sick certification rates as a precursor to addressing fitness for work. METHOD: Electronic records from all 14 practices included in the Keele GP Research Network were reviewed; all sickness certification records from 2005 were retrieved and corresponding consultation records were examined. Participants were 148 176 patients registered during 2005, including 6398 patients who received at least one sickness certificate during the same year. RESULTS: The rate of sickness certification was 101.67 certificates per 1000 person years (95% confidence interval [CI] = 100.13 to 103.21). This rate was significantly higher in women, at 109.76 certificates per 1000 person years (95% CI = 107.550 to 112.02), compared to men who had a rate of 93.68 certificates per 1000 person years (95% CI = 91.59 to 95.78; P<0.001). The rate of sickness certification was greatest for mental health conditions, followed closely by musculoskeletal conditions. CONCLUSION: On average, one in 10 patients will receive a sickness certificate each year, with the highest rates occurring around 50 years of age, in women. Mental health and musculoskeletal conditions were associated with the highest rates of certification. These results provide important information to underpin the national 'Fit for Work' scheme, by providing targets for intervention and a benchmark against which the impact of public health initiatives to reduce certified sickness absence due to health conditions can be evaluated and monitored.

Is childhood pain associated with future mental health problems? A population based study of young adults in North Staffordshire.

BACKGROUND: Depression is frequently associated with pain, yet the exact nature of this relationship is still not completely understood. Increasingly it is thought that pain and depression may share a common causal pathway that may originate in childhood. METHODS: A cross-sectional population-based survey recruited participants aged 18-25 years. Participants were asked about their current and childhood pain experiences. Current levels of anxiety and depression were assessed using the Hospital Anxiety and Depression Scale. RESULTS: A total of 858 young adults responded to the questionnaire. Depression was associated with having a family member with pain during childhood (OR 1.50; 95% CI 1.00, 2.26), having more illness than peers during secondary school (1.66; 1.03, 2.67) and having more than three relatives with pain during childhood (OR 2.48; 1.48, 4.15). Adult anxiety was associated with more illness than peers at primary school (1.73; 1.15, 2.61), more 'emotional' causes of pain at both primary (1.73; CI 1.13, 2.65) and secondary school (2.06; 1.41, 3.00), and having a family member with pain during childhood (1.39; 1.04, 1.86). CONCLUSIONS: This study adds further evidence of an association between pain experiences in childhood and mental health problems in adulthood. Clinicians should be aware of the importance of assessing childhood pain exposures in adult patients with common mental health problems.

Onset and persistence of person-perceived participation restriction in older adults: a 3-year follow-up study in the general population.

BACKGROUND: Participation restriction is defined as "problems an individual may experience in involvement in life situations" and refers to the personal and societal consequences of health conditions. There is a growing interest in participation restriction because (i) problems with work or looking after others may be more concerning to individuals than the signs and symptoms of health conditions and (ii) even when poor health persists, participation may still be maintained. The natural history of participation restriction in the general population is unknown and the aim of this report is to describe change in status of person-perceived participation restriction over three years in community-dwelling adults aged 50 years and over. METHOD: Prospective cohort study (baseline and 3-year follow-up) using postal questionnaires mailed to a population-based sample of older adults. Responders were included in this study if they completed all items of the Keele Assessment of Participation at baseline (n = 6965). Estimates of onset and persistence of person-perceived participation restriction at 3-year follow-up were calculated for any and for each aspect of life in the sample as a whole, and then by age and gender using attrition re-weighted logistic regression to take account of sample attrition. RESULTS: In the whole sample of 6965 persons, overall participation status at three years was unchanged in 69%, and changed in 31%. Of 3431 persons with no restriction at baseline, it is estimated that 29.8% (95% confidence interval: 27.6%, 32.0%) would report restriction in at least one aspect of life at 3-year follow-up. Of 3534 persons who had baseline restriction, it is estimated that 68.8% (66.2%, 71.3%) would report continuing restriction in at least one aspect of life after 3 years. Onset and persistence both increased with age, and were most frequently recorded for restricted mobility outside the home. CONCLUSION: Although most older persons do not change their overall participation status during a three-year period, change does occur which implies that population approaches to improving participation can be sought. Both onset and persistence of person-perceived participation restriction are more common the older the age-group.

Birth-related exposures and asthma and allergy in adulthood: a population-based cross-sectional study of young adults in North Staffordshire.

The rise in the prevalence of asthma and other allergic disorders over the past two decades has been well documented, yet this increase has still to be fully explained. One possible hypothesis is that the rise in atopic disease is related to recent changes in obstetric practice. Using a population based survey, with linked general practice and hospital birth records, we investigated the association between 6 birth related exposures (birth weight, mode of delivery, artificial commencement of labour, prematurity, neonatal intensive care unit admission and foetal distress) and asthma, allergic rhinitis, eczema and hay fever in adulthood. No statistically significant associations were demonstrated between any of the birth-related exposures and the 4 allergic conditions studied, although some non-significant trends were noted, especially for those born by Caesarean section (asthma: odds ratio 1.71, 95% confidence interval 0.75, 3.86, eczema: 1.09, 95% CI 0.41, 2.91, hay fever: OR 1.36, 95% CI 0.51, 3.61) (Table 2) or having evidence of foetal distress during labour (asthma: OR 1.45, 95% CI 0.70, 3.02, rhinitis OR 2.82, 95% CI 0.87, 9.15, hay fever OR 1.34, 95% CI 0.57, 3.14). Given the ongoing changes in obstetric practice and the continuing rise in the prevalence of allergic disorders, this area is worthy of further investigation.

Patterns of pain and mobility limitation in older people: cross-sectional findings from a population survey of 18,497 adults aged 50 years and over.

Mobility limitation is the most common disability in the general population, and pain is a frequent symptom at older ages. We have investigated the association of different patterns of pain and mobility limitation in a large sample of older adults. A cross-sectional postal survey of all adults aged 50 years and over registered with eight general practices in North Staffordshire, UK, resulted in 18,497 respondents (adjusted response=70.8%). Information on demographics, recent pain and the self-reported level of mobility limitation was collected. Associations between pain and mobility limitation were assessed using a partial proportional odds model, taking into account age, gender and socio-economic status. Limitation in walking 100 yards was reported by 29% of respondents. Limitation increased sharply with age, and was higher in the female and lower socio-economic groups. Persons reporting pain were significantly more likely to report limitation. The relationship between mobility limitation and pain was stronger in the youngest age group, but proportionally more people in the oldest age groups have mobility limitation associated with pain. Lower limb and multiple pains present a potential target for the prevention of mobility limitation up to the oldest age groups.

Birth factors and common mental health problems in young adults: a population-based study in North Staffordshire.

BACKGROUND: Birth-related factors have been associated with adult chronic disease. Whilst the potential association between these factors and depression in adulthood was been described rather less is known about the role of these exposures in the development of anxiety. METHOD: Cross-sectional population-based survey recruited adults aged 18-25 years. Participants were classified on the basis of responses to the Hospital Anxiety and Depression Scale. Birth-related exposures were determined by hospital medical record review. A proportional odds model was used to assess associations between birth factors and anxiety and depression. RESULTS: No significant associations were found between birth factors and anxiety. Significant associations were found between depression with low birth weight (odds ratio 2.88, 95% confidence interval 1.26-6.59) and neonatal admission to ITU (3.12, 1.25, 7.78). CONCLUSION: Low birth weight and neonatal intensive care unit admission are significantly associated with depression in adults. Other birth related variables were not significantly associated with either depression or anxiety.

Knee pain and osteoarthritis in the general population: what influences patients to consult?

BACKGROUND: We examined the relationship between predisposing factors, enabling factors and need-related factors with consultation for knee pain in general practice. METHODS: This was a retrospective review of computerized medical records for knee-related consultations in the 18 months before baseline assessment of individuals aged over 50 years reporting knee pain in the previous 12 months. The association between each factor and consultation for consulters compared to non-consulters was summarized using odds ratios (ORs). Interaction between each variable and chronic pain grade was investigated. The association between knee-related consultation and the number and type of other co-morbid consultations was then determined. RESULTS: In total, 742 participants were assessed. Of these, 209 (28%) had a knee-related consultation in the previous 18 months. Recent onset of pain [OR 3.2; 95% confidence interval (95% CI) 1.8, 5.7] and severity of pain, Grade III/IV (OR 3.4; 95% CI 2.1, 5.6), were associated with knee-related consultation. Those rating their knee problem as a health priority were more likely to consult (OR 3.2; 95% CI 1.6, 6.7). Irrespective of knee pain severity, there was no difference in the median number of co-morbid consultations between knee consulters and knee non-consulters. CONCLUSIONS: Need-related factors appeared to be associated with the decision to consult about knee pain. Neither the presence of self-reported selected co-morbid conditions nor the total number of co-morbid conditions was related to consultations for knee pain. Nevertheless, 50% of those with severely disabling knee pain still did not consult for it. Further investigation of this is important in order to optimize care for patients with knee pain and co-morbid disease.

The effect of age on the onset of pain interference in a general population of older adults: prospective findings from the North Staffordshire Osteoarthritis Project (NorStOP).

Pain that interferes with daily life appears to be strongly age-related in cross-sectional studies, although the nature of this relationship over time has not been established. We have investigated the onset and persistence of pain and pain interference over a 3-year period to determine their association with age in older people. A 3-year follow-up postal survey was conducted of adults aged 50 years and over (n=5366) who had previously been recruited as part of the North Staffordshire Osteoarthritis Project. Four thousand two-hundred and thirty-four completed questionnaires were received (adjusted response 84.7%). The occurrence of pain interference at 3 years was 19.7% in persons free of such pain at baseline, higher in females than males (6.0% difference; 95% CI: 2.6%, 9.3%), and showed a clear age-related trend with a more than twofold increase from 50 to 59 years (16.0%) to the 80+ years (35%). Any pain at follow-up was reported by 48% of those pain-free at recruitment, and this figure was similar for males and females, and across 10-year age-groups. Persistence of pain interference (72.1%) at 3 years was high. In adults aged 50 years and over, the onset of pain that interferes with life shows a clear gender difference and a consistent rise with age into the oldest age-group. This was in strong contrast to the onset of pain which showed no gender or age-related trends. The implications for public health, as for the treatment of the individual, are twofold, relating to efforts to prevent disabling pain from occurring and to understand the factors that accelerate the impact which pain has on everyday life when people reach the oldest ages.