Background In December 2022, California prohibited the sale of most flavoured tobacco products; however, limited data are ...

Objective To determine whether a full-scale randomised control trial (RCT) assessing the efficacy and cost-effectiveness of a ...

Discover how longitudinal data helps analyze financial trends, business risks, and economic changes with repeated observations of the same subjects over time.

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Thomas J. Brock is a CFA and CPA with more ...

Objectives To explore the levels of health-related functioning during pregnancy and postpartum and its association with non-severe maternal morbidities. Design An observational longitudinal study.