Table 4

Hip pain, ADL function, sport function and quality of life outcomes meta-analysis and sensitivity analysis

DomainFollow-up timeScoreMICAll studiesSensitivity analysis
Studies includedWMD (95% CI)τ2I2Studies includedWMD (95% CI)τ2I2
Pain<3 mosVAS3026 5031 (22 to 40)43*675019 (7 to 31)
3 to <6 mosVAS3026 29 5037 (24 to 50)167*9229 5026 (19 to 32)14
HAGOS, HOOS936 4918 (16 to 21)003617 (9 to 25)
6 mos to <1 yearVAS3026 29 4845 (37 to 53)51*7828 4839 (30 to 47)1438
1 to <2 yearsVAS3026 29 4840 (27 to 54)171*9229 4828 (22 to 35)00
2 to <3 yearsVAS3025 26 28 35 4542 (37 to 46)26*722540 (34 to 46)
3 to <4 yearsVAS, NRS3026 3937 (13 to 50)431*97
4 to <5 yearsVAS3026 4044 (39 to 50)1256
ADL function3 to <6 mosHAGOS, HOOS936 4918 (15 to 21)003618 (9 to 27)
6 mos to <1 yearHOS93122 (17 to 27)003122 (17 to 27)00
1 to <2 yearsHOS930 31 3918 (13 to 24)19*6430 3121 (16 to 26)526
2 to <3 yearsHOS928 31 34 38 4224 (20 to 28)19*6531 34 4223 (19 to 27)630
3 to <4 yearsHOS939 4417 (8 to 25)32*85
≥5 yearsHOS92710 (7 to 13)
Sport function3 to <6 mosHAGOS, HOOS1036 4919 (16 to 22)003617 (6 to 28)
6 mos to <1 yearHOS63133 (19 to 47)64613133 (19 to 47)6461
1 to <2 yearsHOS630 3138 (30 to 45)92330 3138 (30 to 45)923
2 to <3 yearsHOS628 31 34 38 4241 (29 to 53)261*9331 34 4239 (29 to 49)100*80
3 to <4 yearsHOS64430 (24 to 36)
≥5 yearsHOS62731 (27 to 34)
Quality of life3 to <6 mosHAGOS, HOOS1136 4919 (16 to 22)003617 (8 to 26)
  • HAGOS, Copenhagen Hip and Groin Outcome Score; HOOS, Hip dysfunction and Osteoarthritis Outcome Score; HOS, Hip Outcome Score; I2, degree of heterogeneity; MIC, minimal important change; NRS, numeric rating scale; τ2, between-study variance; VAS, visual analogue scale; WMD, weighted mean difference.

  • ∼ Only one study but with two groups; therefore, analysis of τ2 and I2 was possible.

  • *Between-study variance significant at p<0.05.