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Table 2 Summary of findings

From: Effect of hospital volume on outcomes of total hip arthroplasty: a systematic review and meta-analysis

OutcomeStudiesHipsRisk ratioSignificance
Postoperative surgical site infection8200,9501.25
CI [1.01, 1.55]
0.04
Cost of surgery6129,8933.44
CI [2.57, 4.30]
< 0.00001
Postoperative length of hospital Stay9232,6910.83
CI [0.48, 1.18]
< 0.00001
Complications during index hospitalization536,1590.90
CI [0.49, 1.64]
0.73
Complication within 90 days post-op374,4091.80
CI [1.50, 2.17]
< 0.00001
Revision arthroplasty within 1 year post-op5361,4401.27
CI [0.98, 1.65]
0.07
Long-term revision arthroplasty5509,1551.18
CI [0.86, 1.62]
0.31
30-day mortality3140,6562.33
CI [1.27, 4.28]
0.006
90-day mortality458,6881.26
CI [1.05, 1.51]
0.01
1-year mortality413,2032.26
CI [1.32, 3.88]
0.003
Postoperative thromboembolic events5147,0151.28
CI [0.92, 1.77]
0.15
  1. CI confidence interval
  2. *Risk ratio for low-volume hospitals in comparison to high-volume hospitals