Table 1 Epidemiologic Data
Study group | Control group | p-value | ||
|---|---|---|---|---|
Number of included cases | 100 | 159 | ||
Number of answered questionnaires | 86 (86%) | 112 (70%) | ||
Number of deceased patients | 10 (10%) | 35 (22%) | ||
Mean follow-up time | 49 months min: 16 max: 90 | 79 months min: 23 max: 120 | ||
Mean age at surgery | 69.6 years min: 41 max: 87 | 68.5 years min: 23 max: 92 | 0.386 | |
Mean body mass index (BMI) | 28.3 min: 15.9 max: 42.5 | 28.6 min: 18.5 max: 63.8 | 0.726 | |
ASA-classification | mean | 2.4 | 2.5 | 0.011 |
1 | 4% | Ø | ||
2 | 56% | 48% | ||
3 | 40% | 52% | ||
Gender male (♂) / female (♂) | ♂ 41 (41%) ♀ 59 (59%) | ♂ 57 (36%) ♀ 102 (64%) | ||
Side of procedure right (R) / left (L) | R 52 (52%) L 48 (48%) | R 84 (53%) L 75 (47%) | 0.899 | |
Number of previous revisions | 0.015 | |||
none | 93% | 78% | ||
1 | 6% | 17% | ||
≥ 2 | 1% | 5% | ||