Table 3 Baseline characteristics for the 5-year survivor group
From: Long-term risk of reoperation after modular hemiarthroplasty
Bipolar | Unipolar | P Value | SMD | Missing | ||
|---|---|---|---|---|---|---|
n | 3637 | 3537 | ||||
Mean age (SD) | 81.92 (6.52) | 81.89 (6.73) | 0.827 | 0.005 | 0.0 | |
Mean BMI (SD) | 24.57 (4.46) | 24.49 (4.03) | 0.642 | 0.019 | 66.3 | |
Age group - years (%) | < 75 | 440 (12.1) | 451 (12.8) | 0.231 | 0.040 | 0.0 |
> 85 | 1072 (29.5) | 1090 (30.8) | ||||
75–85 | 2125 (58.4) | 1996 (56.4) | ||||
Sex (%) | Men | 731 (20.1) | 707 (20.0) | 0.931 | 0.003 | 0.0 |
Women | 2906 (79.9) | 2830 (80.0) | ||||
Year of surgery (%) | 2005–2006 | 778 (21.4) | 777 (22.0) | 0.804 | 0.030 | 0.0 |
2007–2008 | 781 (21.5) | 754 (21.3) | ||||
2009–2010 | 771 (21.2) | 771 (21.8) | ||||
2011–2012 | 731 (20.1) | 708 (20.0) | ||||
2013–2015 | 576 (15.8) | 527 (14.9) | ||||
Approach (%) | Posterior | 1690 (46.5) | 1660 (46.9) | 0.710 | 0.009 | 0.0 |
Lateral | 1947 (53.5) | 1877 (53.1) | ||||
Hospital type (%) | University or regional | 1063 (29.2) | 1204 (34.0) | < 0.001 | 0.108 | 0.0 |
County | 2060 (56.6) | 1902 (53.8) | ||||
Rural | 514 (14.1) | 431 (12.2) | ||||
ASA class (%) | 1 | 122 (5.6) | 88 (4.0) | 0.036 | 0.088 | 38.5 |
2 | 1112 (50.8) | 1107 (49.8) | ||||
3 | 910 (41.6) | 976 (43.9) | ||||
4 | 43 (2.0) | 53 (2.4) |