Table 3.

Study characteristics of randomized controlled trials assessing femoral neck fractures

	1980s (4 trials)	1990s (12 trials)	2000+ (26 trials)	p-value
Average age	77	79	81	0.2
Average sample size a	201	218	192	0.8
Sample size range a	89–278	43–607	40–455
Intervention b
Arthroplasty vs. arthroplasty	1	2	11
Arthroplasty vs. IF	2	2	11
IF vs. IF	1	8	4

^a Patients

^b IF: internal fixation.