Cases | Controls | ||||||
---|---|---|---|---|---|---|---|
(N = 38) | (N = 40) | χ2/t | p | ||||
Agea | 72.6 | 6.5 | 70.8 | 7.4 | − 1.173 | 0.244 | |
Genderb | Male | 18 | 47.4 | 22 | 55 | 0.454 | 0.327 |
Female | 20 | 52.6 | 18 | 45 | |||
Type of interventionb | LAR | 14 | 36.8 | 14 | 35 | 0.029 | 0.526 |
LC | 24 | 63.2 | 26 | 65 | |||
Hospital staya | 12.1 | 4.7 | 16.6 | 6.8 | 3.494 | 0.001 | |
POIa | 3.8 | 0.9 | 7.9 | 3.5 | 7.193 | < 0.001 | |
PPOIb | 9 | 23.7 | 40 | 100 | 48.593 | < 0.001 | |
ALb | 1 | 2.6 | 3 | 7.5 | 0.949 | 0.327 |