Purpose Lack of control for time‐varying exposures can lead to substantial bias in estimates
of treatment effects. The aim of this study is to provide an overview and guidance on some of …

Objective: This study evaluated rates of all-cause mortality and self-harm in association with
clozapine treatment in individuals with treatment-resistant schizophrenia. Method: A …

Objective To evaluate the association between selective serotonin reuptake inhibitor (SSRI)
and selective serotonin and norepinephrine reuptake inhibitor (SNRI) use and risk of …

Objective To evaluate the effects of long‐term physical activity on subsequent risk of
rheumatoid arthritis (RA) in a prospective cohort study. Methods This study investigated …

Background Current evidence of the association between the use of sulfonylurea and
cancer risk is highly conflicting and little evidence of this association is from the mainland …

Objectives The association between disease activity and infection risk among patients with
rheumatoid arthritis (RA) is not clear, and it is challenging to determine because of …

Purpose To assess the impact of a variety of methodological parameters on the association
between six drug classes and five key adverse events in multiple databases. Methods The …

Background High-frequency oscillatory ventilation (HFOV) use was associated with greater
mortality in adult acute respiratory distress syndrome (ARDS). Nevertheless, HFOV is still …

Purpose To determine the effects of statins and steroids on the risk of coronary artery
disease (CAD) and stroke in patients with interstitial lung disease and pulmonary fibrosis …

Recent experimental and epidemiological studies have suggested that beta‐blocker use
might be associated with better cancer prognosis, but results were inconclusive and only few …