ArticlePloS one2013
Month of birth and mortality in Sweden: a nation-wide population-based cohort study.
Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
16 citing papers in PubMed.
- Human life expectancy and season of birth in Taiwan: A retrospective cohort study.Die Naturwissenschaften · 2024Article
- Optimal timing of influenza vaccination in young children: population based cohort study.BMJ (Clinical research ed.) · 2024Article
- Does month of birth influence colorectal cancer prognosis?Langenbeck's archives of surgery · 2023Observational
- Influence of sociodemographic factors in birth seasonality in Spain.American journal of human biology : the official journal of the Human Biology Council · 2022Article
- Article
- Season of Birth and Cardiovascular Mortality in Atrial Fibrillation: A Population-Based Cohort Study.Journal of cardiovascular development and disease · 2021Article
- Impact of birth season on the years of life lost from respiratory diseases in the elderly related to ambient PMEnvironmental health and preventive medicine · 2021Article
- Birth month, birth season, and overall and cardiovascular disease mortality in US women: prospective cohort study.BMJ (Clinical research ed.) · 2019Article
- Changing seasonal variation in births by sociodemographic factors: a population-based register study.Human reproduction open · 2018Article
- Multifactorial analysis of the stochastic epigenetic variability in cord blood confirmed an impact of common behavioral and environmental factors but not of in vitro conception.Clinical epigenetics · 2018Article
- Indigenous Infant Mortality by Age and Season of Birth, 1800-1899: Did Season of Birth Affect Children's Chances for Survival?International journal of environmental research and public health · 2017Article
- Is Month of Birth a Risk Factor for Colorectal Cancer?Gastroenterology research and practice · 2017Article
- Article
- Modeling absolute differences in life expectancy with a censored skew-normal regression approach.PeerJ · 2015Article
- Seasonal variation in the month of birth in patients with skin cancer.British journal of cancer · 2014Article
- Month of birth and cause-specific mortality between 50 and 80 years: a population-based longitudinal cohort study in Sweden.European journal of epidemiology · 2014Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMonth of birth--an indicator for a variety of prenatal and early postnatal exposures--has been associated with life expectancy in adulthood. On the northern hemisphere, people born in the autumn live longer than those born during the spring. Only one study has followed a population longitudinally and no study has investigated the relation between month of birth and mortality risk below 50 years. METHODS AND
resultsIn this nation-wide Swedish study, we included 6,194,745 subjects, using data from population-based health and administrative registries. The relation between month of birth (January-December) and mortality risk was assessed by fitting Cox proportional hazard regression models using attained age as the underlying time scale. Analyses were made for ages >30, >30 to 50, >50 to 80 and >80 years. Month of birth was a significant predictor of mortality in the age-spans >30, >50 to 80, and >80 years. In models adjusted for gender and education for ages >30 and >50 to 80 years, the lowest mortality was seen for people born in November and the highest mortality in those born in the spring/summer, peaking in May for mortality >30 years (25‰ excess hazard ratio compared to November, [95% confidence interval = 16-34 ]) and in April for mortality >50 to 80 years (42‰ excess hazard ratio compared to November, [95% confidence interval = 30-55]). In the ages >80 years the pattern was similar but the differences in mortality between birth months were smaller. For mortality within the age-span >30 to 50 years, results were inconclusive.
conclusionMonth of birth is associated to risk of mortality in ages above 50 years in Sweden. Further studies should aim at clarifying the mechanisms behind this association.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.