Table 1 Patient characteristics by questionnaire period. Values are displayed as Median (IQR) or n (%). P-values were calculated using mixed effects models testing the association between questionnaire period as the predictor and the characteristic as the outcome with a random effect for patient
Characteristic | Initial period: brief descriptors N = 21,497 | With explicit descriptors N = 1,436 | p-value |
|---|---|---|---|
Age | 55 (46, 64) | 56 (45, 64) | < 0.001 |
BMI | 27 (23, 31) | 27 (24, 31) | 0.3 |
Unknown | 3 | 0 | |
Female | 16,724 (78%) | 1,144 (80%) | 0.7 |
ASA score (3–4) | 8,358 (39%) | 577 (40%) | 0.4 |
Unknown | 5 | 2 | |
Apfel Score | |||
0–2 | 4,944 (24%) | 337 (23%) | 0.005* |
3 | 11,447 (55%) | 840 (58%) | |
4 | 4,471 (21%) | 259 (18%) | |
Unknown | 635 | 0 | |
Service | |||
Breast | 5,885 (27%) | 368 (26%) | < 0.001* |
Gynecology | 3,461 (16%) | 303 (21%) | |
Head and Neck | 1,344 (6.3%) | 115 (8.0%) | |
Plastics | 6,482 (30%) | 402 (28%) | |
Urology | 4,325 (20%) | 248 (17%) | |
Outpatient Surgery | 9,054 (42%) | 600 (42%) | 0.8 |
Operative time (mins) | 122 (74, 200) | 112 (67, 180) | < 0.001 |