After excluding prevalent cases in 2007, a nested case-control study enrolling 1,256 suicide cases and 5,022 matched controls was conducted. The frequencies of MDD-related outpatient or inpatient ...

In this population-based nested case-control study we used registry data from four Nordic countries to assess thyroid cancer risk in offspring in relation to maternal medical history, pregnancy ...

We examine the relationship of oral microbiota with subsequent risk of pancreatic cancer in a large nested case–control study. Design We selected 361 incident adenocarcinoma of pancreas and 371 ...

This study aimed to characterise the trajectory of depressive symptoms during the 15 years preceding a dementia diagnosis, with particular attention to variations by dementia aetiology. Methods This ...

For this study, all observational studies (prospective or retrospective comparative cohort or case–control studies), nested case–control studies, randomized controlled trials (RCTs), nonrandomized ...

Nested, circular variables such as duration of ... 58 59 Since all analyses were adjusted by site, this helps to control confounding in any given setting in the study population. Risk factor data ...

Methods: Databases including China National Knowledge Infrastructure (CNKI), Weipu Database (VIP), Wanfang Database, PubMed, Cochrane Library, Web of Science, and Embase were searched to collect ...

Methods and findings The design was a two-arm pragmatic randomised controlled trial, nested in a longitudinal open cohort study in Danish public schools ... between groups in the primary outcome ...

The results of well-designed observational studies (with either a cohort or a case–control design) do not systematically overestimate the magnitude of the effects of treatment as compared with ...

When executed with precision and transparency, ECAs can enhance trial efficiency, expand access and support evidence—while ...

Prior to this study, the earliest known evidence of birds reproducing in either the Arctic or Antarctic was about 47 million years ago, well after an asteroid killed 75% of the animals on Earth.