Table 3.

Sample size by study theme

Theme	Mean sample size	Median sample size	Inter quartile range
Prognostic & Epidemiology	2,648.6	141	67.5-450.5
Miscellaneous	1,167.7	57	36-118.5
Non-operative	111.1	64.5	46.7-109.2
Radiology & Fracture classification	68.2	15.5	5-47.5
Rehabilitation	52.2	46.5	31-78.5
Surgical treatment	52.1	35	23-63
Anatomy	35.1	23	12-40
Biomechanics and Basic science	27.5	20	12-30