Quantitative studies investigating a relevant insurance or regulatory feature that employed multiple regression techniques were eligible for inclusion. Eligible studies used multiple regression techniques with a temporal element to the analysis.
The included studies were diverse. The main workers’ compensation features among included studies were the introduction of experience rating and degree of experience rating; the main occupational health and safety features included the introduction of regulations and the enforcement of regulations through inspections, citations and penalties.
Titles and abstracts were screened by one reviewer with periodic quality checks by a second. Full papers were independently screened by two reviewers, with disagreements resolved by consensus.