Instrumental variable (IV) methods have been proposed as a potential approach to the
common problem of uncontrolled confounding in comparative studies of medical …

Instrumental variable (IV) methods provide a powerful but underutilized tool to address many
common problems with observational sociological data. Key to their successful use is having …

Recent theoretical studies have shown that conditioning on an instrumental variable (IV), a
variable that is associated with exposure but not associated with outcome except through …

Many firms increasingly offer community venues to their customers to facilitate social
interactions amongst them. Prior studies have shown that community participants have high …

Instrumental variable analysis is an increasingly popular method in comparative
effectiveness research (CER). In theory, the instrument controls for unobserved and …

This study examines the extent to which technical efficiency (TE) is related to activities
promoted by two natural resource management programmes recently completed in Central …

In cost‐effectiveness analyses (CEA) that use randomized controlled trials (RCTs),
covariates of prognostic importance may be imbalanced and warrant adjustment. In CEA …

Objectives To demonstrate how falsification tests can be used to evaluate instrumental
variables methods applicable to a wide variety of comparative effectiveness research …

OBJECTIVE: Instrumental variable (IV) analysis may offer a useful approach to the problem
of unmeasured confounding in prescription drug research if the IV is:(1) strongly and …

BACKGROUND: Using population-based health services information to estimate the
effectiveness of colonoscopy on colorectal cancer (CRC) outcomes is prone to selection …