scholarly journals Unspecified pain and other soft tissue disorders following electrical injuries: a register-based matched cohort study

2021 ◽  
Author(s):  
Per Hoegh Poulsen ◽  
Ole Carstensen ◽  
Anette Kærgaard ◽  
Jesper Medom Vestergaard ◽  
Kent J. Nielsen ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Cohort Study ◽  
Soft Tissue ◽  
Cox Regression ◽  
Conditional Logistic Regression ◽  
Electrical Injury ◽  
Matched Cohort ◽  
Eye Injuries ◽  
History Of ◽  
Electrical Injuries

Abstract Objective This study investigates whether individuals who have sustained an electrical injury (EI) are diagnosed with unspecified pain or pain related to the musculoskeletal system in the years following the injury. Methods Individuals listed in Danish registers as having sustained EIs were matched for sex, age, and year of injury in a cohort study with individuals having experienced dislocations/sprains (match 1), eye injuries (match 2), and a sample of individuals with the same occupation without a history of electrical injuries (match 3). Outcomes were unspecified pain and unspecified soft tissue disorders. Conditional logistic regression and conditional Cox regression were applied. Results We identified 14,112 individuals who sustained EIs. A higher risk of both outcomes was observed for all three matches, and was highest at the 6- and 12-month follow-ups. The risk of both outcomes was considerably higher for match 3. Conclusions This study confirms that exposure to EIs increases the risk of being diagnosed with unspecified pain or unspecified soft tissue disorders both at short and long terms. Our results also showed that the risk of unspecified pain as sequelae is related to the severity of the injury.

scholarly journals Mental disorders following electrical injuries—A register-based, matched cohort study

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0247317
Author(s):  
Karin Biering ◽  
Jesper Medom Vestergaard ◽  
Anette Kærgaard ◽  
Ole Carstensen ◽  
Kent J. Nielsen
Keyword(s):  
Mental Disorders ◽  
Somatoform Disorders ◽  
Case Reports ◽  
Absolute Risk ◽  
Electrical Injury ◽  
Matched Cohort ◽  
Post Traumatic Stress ◽  
Eye Injuries ◽  
Physical Damage ◽  
Electrical Injuries

Introduction Electrical injuries happen every day in homes and workplaces. Not only may these injuries cause physical damage and disability, they may also cause mental disorders. The aim of this study was to investigate if persons with an electrical injury suffer from mental disorders in the following years. Material and methods In a prospective matched cohort design, we identified 14.112 electrical injuries in two Danish registries and matched these with persons with dislocation/sprain injuries or eye injuries, respectively, as well as with persons from the workforce from the same occupation, using year of injury, sex and age as matching variables. We identified possible outcomes in terms of mental diagnoses in the Danish National Patient registry, based on literature, including reviews, original studies and case-reports as well as experiences from clinical praxis. The associations were analyzed using conditional cox- and logistic regression. Results We found that the following of the examined outcomes were associated with exposure to an electrical injury compared to the matched controls. Some of the outcomes showed the strongest associations shortly after the injury, namely ‘mental disorders due to known physiological condition’, ‘anxiety and adjustment disorders’, and especially the ‘Post Traumatic Stress Disorder (PTSD)’ subgroup. The same pattern was seen for ‘Depression’ although the associations were weaker. Other conditions took time to develop (‘Somatoform disorders’), or were only present in the time to event analysis (‘other non-psychotic mental disorders’ and ‘sleep disorders’). The findings were consistent in all three matches, with the highest risk estimates in the occupation match. Conclusion Electrical injuries may result in mental disorders, both acute and several years after. However, the absolute risk is limited as most of the outcomes are rare.

Contacts with general practitioner, sick leave and work participation after electrical injuries: a register-based, matched cohort study

2020 ◽  
Vol 78 (1) ◽  
pp. 54-60
Author(s):  
Karin Biering ◽  
Jesper Medom Vestergaard ◽  
Kent Jacob Nielsen ◽  
Ole Carstensen ◽  
Anette Kærgaard
Keyword(s):  
Sick Leave ◽  
Conditional Logistic Regression ◽  
Electrical Current ◽  
Work Participation ◽  
Matched Cohort ◽  
Eye Injuries ◽  
Increased Risk ◽  
Increase Risk ◽  
Electrical Injuries

ObjectiveExposure to electrical current may cause injury with both mental and physiological consequences. This may lead to increased contacts with general practitioners (GP) and the injured person may develop reduced ability to work. We aimed to examine these outcomes in terms of work-participation, long-term sick leave and contacts with GPs.MethodsIn a matched cohort design, we identified 14 112 electrical injuries in two registries and matched these with both patients with distorsion injuries or eye injuries, and with persons from the same occupation, using year of injury, sex and age for matching. We defined the outcomes based on register information regarding contacts with GPs and public transfer income. After the injury, we determined if the person had a long-term sick leave episode during the first 6, 12 months and 5 years. We calculated work participation during the year and 5 years and the number of GP contacts in the year of the injury, the year after and 5 years after the injury and dichotomised this at twice the mean number of contacts in the study population. The associations were analysed using conditional logistic regression.ResultsWe found increased risk for all defined outcomes, with the highest estimates in the occupation match. The risk estimates were similar over time. Adjusting for previous work participation increased the estimates slightly, whereas adjusting for previous contacts with GPs reduced the estimates. Restricting to those with at longer hospitalisation increased the estimates.ConclusionElectrical injuries increase risk of long-term sick leave, low work participation and increased contacts with GPs.

scholarly journals Differential cerebrovascular risks in glioblastoma and meningioma patients: a population-based matched cohort study in Wales (United Kingdom)

2021 ◽  
Vol 23 (Supplement_4) ◽  
pp. iv12-iv12
Author(s):  
Michael T C Poon ◽  
Kai Jin ◽  
Paul M Brennan ◽  
Jonine Figueroa ◽  
Cathie Sudlow
Keyword(s):  
Cohort Study ◽  
General Population ◽  
Ischaemic Stroke ◽  
Population Based ◽  
Parametric Models ◽  
Matched Cohort ◽  
Matched Cohort Study ◽  
Hazard Ratios ◽  
History Of

Abstract Aims There is limited evidence on cerebrovascular risks in glioblastoma and meningioma patients. We aimed to compare cerebrovascular risks of these patients with the general population. Method We used population-based routine healthcare and administrative data linkage in this matched cohort study. Cases were adult glioblastoma and meningioma patients diagnosed in Wales 2000-2014 identified in the cancer registry. Controls from cancer-free general population were matched to cases (5:1 ratio) on age (±5 years), sex and GP practice. Factors included in multivariable models were age, sex, index of multiple deprivation, hypertension, diabetes, high cholesterol, history of cardiovascular disease, and medications for cardiovascular diseases. Outcomes were fatal and non-fatal haemorrhagic and ischaemic stroke. We used flexible parametric models adjusting for confounders to calculate the hazard ratios (HR). Results Final analytic population was 16,921 participants, of which 1,340 had glioblastoma and 1,498 had meningioma. The median follow-up time was 0.5 year for glioblastoma patients, 4.9 years for meningioma patients, and 6.6 years for controls. The number of haemorrhage and ischaemic stroke was 154 and 374 in the glioblastoma matched cohort, respectively, and 180 and 569 in the meningioma matched cohort, respectively. The adjusted HRs for haemorrhagic and ischaemic stroke were 3.74 (95%CI 1.87-6.57) and 5.62 (95%CI 2.56-10.42) in glioblastoma patients, respectively, and were 2.42 (95%CI 1.58-3.52) and 1.86 (95%CI 1.54-2.23) in meningioma patients compared with their controls. Conclusion Glioblastoma and meningioma patients had higher cerebrovascular risks; these risks were even higher for glioblastoma patients. Further assessment of these potentially modifiable risks may improve survivorship.

scholarly journals 1402. Long-Term Mortality and Epilepsy in Patients After Brain Abscess: A Nationwide Population-based Matched Cohort Study

2019 ◽  
Vol 6 (Supplement_2) ◽  
pp. S510-S510
Author(s):  
Jacob Bodilsen ◽  
Michael Dalager-Pedersen ◽  
Diederik van de Beek ◽  
Matthijs C Brouwer ◽  
Henrik Nielsen
Keyword(s):  
Cohort Study ◽  
Brain Abscess ◽  
Cox Regression ◽  
Population Based ◽  
Matched Cohort ◽  
Matched Cohort Study ◽  
Population Controls ◽  
New Onset

Abstract Background The long-term outcome of brain abscess is unclear. Methods We used medical registries to conduct a nationwide population-based matched cohort study to examine the long-term risks of mortality and new-onset epilepsy in patients hospitalized with brain abscess in Denmark from 1982 through 2016. Comparison cohorts from the same population individually matched on age, sex, and residence were identified, as were siblings of all study participants (Figure 1). We computed cumulative incidences and hazard rate ratios (HRRs) for mortality and new-onset epilepsy among brain abscess patients, comparison cohorts and siblings. Population and appendicitis controls had similar characteristics and prognosis why only comparisons between brain abscess patients and population controls are detailed here. Results We identified 1,384 brain abscess patients with a median follow-up time of 5.9 years (IQR 1.1–14.2). The 1-year, 2–5 year, and 6–30-year mortality of patients after brain abscess was 21%, 16% and 27% when compared with 1%, 6% and 20% for matched population controls (Figure 2). Cox regression analyses adjusted for Charlson comorbidity index score showed 1-year, 2–5 year, and 6- to 30-year HRRs of 17.5 (95% CI 13.9–22.2), 2.61 (95% CI 2.16–3.16) and 1.94 (95% CI 1.62–2.31). The mortality in brain abscess patients compared with population controls was significantly increased regardless of sex or age group except among subjects 80 years or older, and in both previously healthy individuals and immuno-compromised persons. Among the 30-day survivors of brain abscess (median follow-up 7.6 years [IQR 2.2–15.5]), new-onset epilepsy occurred in 32% compared with 2% in matched population controls. Cause-specific Cox regression analysis adjusted for stroke, head trauma, alcohol abuse, and cancer showed 1-year, 2–5-year, and 6–30-year HRRs for new-onset epilepsy of 155 (95% CI 78.8–304), 37.7 (95% CI 23.0–59.9), and 8.93 (95% CI 5.62–14.2) (Figure 3). Comparisons between sibling cohorts suggested no substantial effect of family-related factors on the long-term risk of death or epilepsy after brain abscess (Figure 4). Conclusion Brain abscess is associated with an increased long-term risk of mortality and new-onset epilepsy for several years after the acute infection. Disclosures All authors: No reported disclosures.

scholarly journals Incidence of osteoporosis and fragility fractures in asthma: a UK population-based matched cohort study

2020 ◽  
pp. 2001251
Author(s):  
Christos V. Chalitsios ◽  
Tricia M. McKeever ◽  
Dominick E. Shaw
Keyword(s):  
Cohort Study ◽  
General Population ◽  
Cox Regression ◽  
Inhaled Corticosteroids ◽  
Fragility Fractures ◽  
Practice Research ◽  
Research Database ◽  
Matched Cohort ◽  
Matched Cohort Study ◽  
The Impact

BackgroundOsteoporosis and fragility fractures (FF) are associated with corticosteroids which are the mainstay treatment for asthma; however, these bone comorbidities within asthma need to be better described.MethodsA matched cohort study was conducted using the Clinical Practice Research Database (CPRD). Adults with an incident asthma code were identified and matched, with up to four randomly selected people without asthma, by age, gender, and practice. Osteoporosis and FF incidence rates were calculated, and Cox regression was performed comparing hazard rates to the general population. We report the impact of age, gender, glucocorticoids, and the risk of specific fractures.ResultsPatients with asthma had a higher risk of osteoporosis (aHR=1.18, 95% CI: 1.13–1.23) and were 12% (aHR=1.12, 95% CI: 1.07–1.16) more likely to sustain FF than the general population. Age modified the effect of asthma on osteoporosis and FF, such that effect to be stronger in younger people (pinteraction<0.0001). Vertebral (aHR=1.40, 95% CI: 1.33–1.48), and forearm-wrist (aHR=1.27, 95% CI: 1.22–1.32) were the sites linked with a larger incidence. A dose-response relationship between oral corticosteroids (OCS) and osteoporosis was observed, whereas the risk of FF increased in those with 6 or more OCS courses per year. Regular use of inhaled corticosteroids (ICS) increased the risk of both bone conditions.ConclusionPatients with asthma are more likely to develop osteoporosis or sustain FF than the general population with a particular concern in younger people and those more frequently using OCS and ICS.

scholarly journals Pre-eclampsia and risk of later kidney disease: nationwide cohort study

BMJ ◽  
2019 ◽  
pp. l1516 ◽  
Author(s):  
Jonas H Kristensen ◽  
Saima Basit ◽  
Jan Wohlfahrt ◽  
Mette Brimnes Damholt ◽  
Heather A Boyd
Keyword(s):  
Chronic Kidney Disease ◽  
Cohort Study ◽  
Kidney Disease ◽  
Outcome Measure ◽  
Cox Regression ◽  
Hazard Ratio ◽  
Hazard Ratios ◽  
Gestational Age At Delivery ◽  
History Of

ABSTRACTObjectiveTo investigate associations between pre-eclampsia and later risk of kidney disease.DesignNationwide register based cohort study.SettingDenmark.PopulationAll women with at least one pregnancy lasting at least 20 weeks between 1978 and 2015.Main outcome measureHazard ratios comparing rates of kidney disease between women with and without a history of pre-eclampsia, stratified by gestational age at delivery and estimated using Cox regression.ResultsThe cohort consisted of 1 072 330 women followed for 19 994 470 person years (average 18.6 years/woman). Compared with women with no previous pre-eclampsia, those with a history of pre-eclampsia were more likely to develop chronic renal conditions: hazard ratio 3.93 (95% confidence interval 2.90 to 5.33, for early preterm pre-eclampsia (delivery <34 weeks); 2.81 (2.13 to 3.71) for late preterm pre-eclampsia (delivery 34-36 weeks); 2.27 (2.02 to 2.55) for term pre-eclampsia (delivery ≥37 weeks). In particular, strong associations were observed for chronic kidney disease, hypertensive kidney disease, and glomerular/proteinuric disease. Adjustment for cardiovascular disease and hypertension only partially attenuated the observed associations. Stratifying the analyses on time since pregnancy showed that associations between pre-eclampsia and chronic kidney disease and glomerular/proteinuric disease were much stronger within five years of the latest pregnancy (hazard ratio 6.11 (3.84 to 9.72) and 4.77 (3.88 to 5.86), respectively) than five years or longer after the latest pregnancy (2.06 (1.69 to 2.50) and 1.50 (1.19 to 1.88). By contrast, associations between pre-eclampsia and acute renal conditions were modest.Conclusions Pre-eclampsia, particularly early preterm pre-eclampsia, was strongly associated with several chronic renal disorders later in life. More research is needed to determine which women are most likely to develop kidney disease after pre-eclampsia, what mechanisms underlie the association, and what clinical follow-up and interventions (and in what timeframe post-pregnancy) would be most appropriate and effective.

scholarly journals Educational inequalities in all-cause and cause-specific mortality among people with gout: a register-based matched cohort study in southern Sweden

2019 ◽  
Vol 18 (1) ◽  
Author(s):  
Ali Kiadaliri ◽  
Margarita Moreno-Betancur ◽  
Aleksandra Turkiewicz ◽  
Martin Englund
Keyword(s):  
Cohort Study ◽  
Cox Regression ◽  
Reference Population ◽  
Matched Cohort ◽  
Educational Inequalities ◽  
Southern Sweden ◽  
Relative Inequality ◽  
Matched Cohort Study ◽  
Specific Mortality ◽  
Age And Sex

Abstract Background Gout is the most common inflammatory arthritis with a rising prevalence around the globe. While educational inequalities in incidence and prevalence of gout have been reported, no previous study investigated educational inequality in mortality among people with gout. The aim of this study was to assess absolute and relative educational inequalities in all-cause and cause-specific mortality among people with gout in comparison with an age- and sex-matched cohort free of gout in southern Sweden. Methods We identified all residents aged ≥30 years of Skåne region with doctor-diagnosed gout (ICD-10 code M10, n = 24,877) during 1998–2013 and up to 4 randomly selected age- and sex-matched comparators free of gout (reference cohort, n = 99,504). These were followed until death, emigration, or end of 2014. We used additive hazards models and Cox regression adjusted for age, sex, marital status, and country of birth to estimate slope and relative indices of inequality (SII/RII). Three cause-of-death attribution approaches were considered for RII estimation: “underlying cause”, “any mention”, and “weighted multiple-cause”. Results Gout patients with the lowest education had 1547 (95% CI: 1001, 2092) more deaths per 100,000 person-years compared with those with the highest education. These absolute inequalities were larger than in the reference population (1255, 95% CI: 1038, 1472). While the contribution of cardiovascular (cancer) mortality to these absolute inequalities was greater (smaller) in men with gout than those without, the opposite was seen among women. Relative inequality in all-cause mortality was smaller in gout (RII 1.29 [1.18, 1.41]) than in the reference population (1.46 [1.38, 1.53]). The weighted multiple-cause approach generally led to larger RIIs than the underlying cause approach. Conclusions Our register-based matched cohort study showed that low level of education was associated with increased mortality among gout patients. Although the magnitude of relative inequality was smaller in people with gout compared with those without, the absolute inequalities were greater reflecting a major mortality burden among those with lower education.

scholarly journals Alcohol consumption in later life and reaching longevity: the Netherlands Cohort Study

2020 ◽  
Vol 49 (3) ◽  
pp. 395-402 ◽  
Author(s):  
Piet A van den Brandt ◽  
Lloyd Brandts
Keyword(s):  
Cohort Study ◽  
The Netherlands ◽  
Binge Drinking ◽  
Alcohol Intake ◽  
Cox Regression ◽  
Later Life ◽  
History Of ◽  
Using Data ◽  
Moderate Alcohol Intake ◽  
Study Participants

Abstract Background whether light-to-moderate alcohol intake is related to reduced mortality remains a subject of intense research and controversy. There are very few studies available on alcohol and reaching longevity. Methods we investigated the relationship of alcohol drinking characteristics with the probability to reach 90 years of age. Analyses were conducted using data from the Netherlands Cohort Study. Participants born in 1916–1917 (n = 7,807) completed a questionnaire in 1986 (age 68–70 years) and were followed up for vital status until the age of 90 years (2006–07). Multivariable Cox regression analyses with fixed follow-up time were based on 5,479 participants with complete data to calculate risk ratios (RRs) of reaching longevity (age 90 years). Results we found statistically significant positive associations between baseline alcohol intake and the probability of reaching 90 years in both men and women. Overall, the highest probability of reaching 90 was found in those consuming 5– &lt; 15 g/d alcohol, with RR = 1.36 (95% CI, 1.20–1.55) when compared with abstainers. The exposure-response relationship was significantly non-linear in women, but not in men. Wine intake was positively associated with longevity (notably in women), whereas liquor was positively associated with longevity in men and inversely in women. Binge drinking pointed towards an inverse relationship with longevity. Alcohol intake was associated with longevity in those without and with a history of selected diseases. Conclusions the highest probability of reaching 90 years was found for those drinking 5– &lt; 15 g alcohol/day. Although not significant, the risk estimates also indicate to avoid binge drinking.

Effect of Genetic Polymorphisms Related to Folate and Homocysteine Metabolism In the Etiology of Recurrent Miscarriages

Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. 5136-5136
Author(s):  
Elvira Maria Guerra-Shinohara ◽  
Kelma Cordeiro da Silva Giusti ◽  
Nathalia Sierra Monteiro ◽  
Robson José Lazaro ◽  
Fernanda Midori Seino ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Folic Acid ◽  
Conflicts Of Interest ◽  
Conditional Logistic Regression ◽  
The Body ◽  
Methionine Synthase ◽  
Folic Acid Deficiency ◽  
Recurrent Miscarriages ◽  
History Of ◽  
Total Homocysteine

Abstract Abstract 5136 Introduction: Folic acid deficiency has been associated with obstetric complications such as preeclampsia, placental abruption and recurrent miscarriages (RM). Folic acid is a methyl group donating in various reactions. Low concentrations of 5,10-methylenetetrahydrofolate, the cofactor of enzyme thymidylate synthase, decrease the synthesis of thymidylate, which results in increased ratio deoxyuridylate monophosphate/deoxytimidylate monophosphate (dUMP/dTMP) and increased incorporation of deoxyuridylate triphosphate (dUTP) to DNA. The removal of dUTP by DNA-glycosylase can cause permanent damage to DNA, which may lead to apoptosis or increase the risk of developing cancer. Polymorphisms in genes of enzymes (MTHFR - methylene tetrahydrofolate reductase, MTR - methionine synthase and MTRR - methionine synthase reductase) and also in the gene of the reduced folate carrier (RFC1) were related to reduced folate and increased total homocysteine concentrations and have been associated as risk factors for RM. Material and Methods: 171 women with a history of three or more recurrent miscarriages and 95 healthy women with no history of abortion and having two or more normal babies were included. Weight and height of women were obtained and the body mass index (BMI) was calculated. The presence of antibodies (ANA and anti-DNA) was evaluated using immunofluorescence kits. The genotypes of the polymorphisms MTHFR c. 677C>T, MTR c. 2756A>G and RFC1 c.80G>A were obtained by PCR-RFLP, while genotyping for polymorphisms MTRR c. 66A>G and MTHFR c. 1298A>C was made by real time PCR. Multivariate logistic regression model (forward conditional) was used to obtain the odds ratio and its 95% confidence intervals of having MR (dependent variable). The independent variables were: quartiles of BMI, age range, positive ANA (titer of 1/40), positive anti-DNA (titre 1/10), genotypes for the MTHFR c. 677C>T, MTHFR c.1298A>C, MTR c. 2756A>G, MTRR c. 66A>G and RFC1 c. 80G>A. Results: No differences between the groups were observed for serum total homocysteine or allele frequencies for MTHFR c. 677C>T, MTHFR c. 1298A>C, MTR c. 2756A>G and RFC1 c.80G>A polymorphisms. In a conditional logistic regression analysis the risk of RM was significantly associated with BMI OR [95% CI] = 1.40 [1.02, 1.93] per quartile increase in BMI), positive anti-DNA OR [95% CI] = 7.24 [0.92, 57.25], positive ANA OR [95% CI] = 2.48 [1.21, 5.08], and AA genotype for MTRR c. 66A>G polymorphism (OR [95% CI] = 2.19 [1.16, 4.12]. Conclusion: The etiology of RM is multifactorial and it is associated with increasing of BMI, presence of autoantibodies and AA genotype for MTRR c. 66A>G polymorphism. Disclosures: No relevant conflicts of interest to declare.

scholarly journals 25-Hydroxyvitamin D concentration and all-cause mortality: the Melbourne Collaborative Cohort Study

2016 ◽  
Vol 20 (10) ◽  
pp. 1775-1784 ◽  
Author(s):  
Alicia K Heath ◽  
Elizabeth J Williamson ◽  
David Kvaskoff ◽  
Allison M Hodge ◽  
Peter R Ebeling ◽  
...  
Keyword(s):  
Cohort Study ◽  
Cox Regression ◽  
Dried Blood Spots ◽  
Inverse Association ◽  
Blood Spots ◽  
Hydroxyvitamin D ◽  
Excellent Health ◽  
Melbourne Collaborative Cohort Study ◽  
History Of ◽  
25 Hydroxyvitamin D

AbstractObjectiveTo investigate relationships between mortality and circulating 25-hydroxyvitamin D (25(OH)D), 25-hydroxycholecalciferol (25(OH)D3) and 25-hydroxyergocalciferol (25(OH)D2).DesignCase–cohort study within the Melbourne Collaborative Cohort Study (MCCS). We measured 25(OH)D2and 25(OH)D3in archived dried blood spots by LC–MS/MS. Cox regression was used to estimate mortality hazard ratios (HR), with adjustment for confounders.SettingGeneral community.SubjectsThe MCCS included 29 206 participants, who at recruitment in 1990–1994 were aged 40–69 years, had dried blood spots collected and no history of cancer. For the present study we selected participants who died by 31 December 2007 (n2410) and a random sample (sub-cohort,n2996).ResultsThe HR per 25 nmol/l increment in concentration of 25(OH)D and 25(OH)D3were 0·86 (95 % CI 0·78, 0·96;P=0·007) and 0·85 (95 % CI 0·77, 0·95;P=0·003), respectively. Of 5108 participants, sixty-three (1·2 %) had detectable 25(OH)D2; their mean 25(OH)D concentration was 11·9 (95 % CI 7·3, 16·6) nmol/l higher (P<0·001). The HR for detectable 25(OH)D2was 1·80 (95 % CI 1·09, 2·97;P=0·023); for those with detectable 25(OH)D2, the HR per 25 nmol/l increment in 25(OH)D was 1·06 (95 % CI 0·87, 1·29;Pinteraction=0·02). HR were similar for participants who reported being in good, very good or excellent health four years after recruitment.ConclusionsTotal 25(OH)D and 25(OH)D3concentrations were inversely associated with mortality. The finding that the inverse association for 25(OH)D was restricted to those with no detectable 25(OH)D2requires confirmation in populations with higher exposure to ergocalciferol.

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