Comparison 1. Preoperative education for hip replacement versus usual care.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Pain	3		Std. Mean Difference (IV, Random, 95% CI)	Subtotals only
1.1 Hip (up to 3 months)	3	227	Std. Mean Difference (IV, Random, 95% CI)	‐0.17 [‐0.47, 0.13]
2 Function	4		Std. Mean Difference (IV, Random, 95% CI)	Subtotals only
2.1 Hip (3 to 24 months)	4	177	Std. Mean Difference (IV, Random, 95% CI)	‐0.44 [‐0.93, 0.06]
3 Postoperative anxiety (Spielberger State‐Trait Anxiety Index)	3		Mean Difference (IV, Random, 95% CI)	Subtotals only
3.1 Hip (up to 6 weeks postoperatively)	3	264	Mean Difference (IV, Random, 95% CI)	‐2.28 [‐5.68, 1.12]
4 Total number of serious adverse events	2		Risk Ratio (M‐H, Random, 95% CI)	Subtotals only
4.1 Hip (any serious postoperative complications)	2	150	Risk Ratio (M‐H, Random, 95% CI)	0.79 [0.19, 3.21]
5 Preoperative anxiety (Spielberger State‐Trait Anxiety Index)	4		Mean Difference (IV, Random, 95% CI)	Subtotals only
5.1 Hip	4	333	Mean Difference (IV, Random, 95% CI)	‐5.10 [‐7.17, ‐3.03]
6 Length of hospital stay (days)	7		Mean Difference (IV, Random, 95% CI)	Subtotals only
6.1 Hip	7	487	Mean Difference (IV, Random, 95% CI)	‐0.79 [‐1.96, 0.37]
7 Mobility (days to standing or walking)	6		Mean Difference (IV, Random, 95% CI)	Subtotals only
7.1 Hip	6	417	Mean Difference (IV, Random, 95% CI)	‐0.12 [‐0.30, 0.07]
8 Range of motion (degrees)	2		Mean Difference (IV, Fixed, 95% CI)	Subtotals only
8.1 Hip abduction (up to 6 weeks postoperatively)	2	95	Mean Difference (IV, Fixed, 95% CI)	‐1.09 [‐5.35, 3.17]
8.2 Flexion of the hip with flexed knee (up to 6 weeks postoperatively)	1	36	Mean Difference (IV, Fixed, 95% CI)	0.75 [‐7.67, 9.17]
8.3 Flexion of the hip with extended knee (up to 6 weeks postoperatively)	1	36	Mean Difference (IV, Fixed, 95% CI)	‐0.25 [‐9.17, 8.67]
9 Sensitivity analysis: pain	1		Mean Difference (IV, Random, 95% CI)	Subtotals only
9.1 Hip (up to 6 weeks postoperatively)	1	100	Mean Difference (IV, Random, 95% CI)	‐7.0 [‐14.85, 0.85]
10 Sensitivity analysis: function	1		Mean Difference (IV, Random, 95% CI)	Subtotals only
10.1 Hip (6 months postoperatively)	1	47	Mean Difference (IV, Random, 95% CI)	‐7.0 [‐10.55, ‐3.45]