A meta-analysis for comparing effective teaching in clinical education.

Many factors affect learning outcomes, however studies comparing the effectiveness of different clinical teaching methods are limited. We utilize the list of influences on educational achievement compiled by John Hattie to inform a meta-analysis of learning effect sizes (ESs) associated with teaching-learning factors (TLFs) in clinical education. A literature search was conducted in PubMed to identify articles examining clinically relevant TLFs. Selection criteria were applied to identify learner-focused studies, with subsequent categorization by study design (pretest-posttest or controlled group). The Cohen's ES (d) for each TLF was extracted and a pooled ES determined. From 3454 studies, 132 suitable articles enabled analysis of 16 TLFs' ESs. In general, ESs derived from pretest-posttest data were larger than those from controlled group designs, probably due to learner maturation effect. The TLFs of mastery learning, small group learning and goal settings possessed the largest ESs (d ≥ 0.8), while worked examples, play programs, questioning, concept mapping, meta-cognitive strategies, visual-perception programs and teaching strategies demonstrated ESs between 0.4 and 0.8. This is the first study to provide a rigorous and comprehensive overview of the effectiveness of TLFs in clinical education. We discuss the practical traits shared by effective TLFs which may assist teaching design.