Table 1.
Variables* | Before matching | After matching | |||||
---|---|---|---|---|---|---|---|
All | Precision | Routine | p Value | Precision | Routine | p Value | |
(N = 353) | (N = 55) | (N = 298) | (N = 55) | (N = 55) | |||
Age(years) | 50.5 ± 5.3 | 52.9 ± 10.4 | 47.6 ± 12.6 | 0.108 | 52.9 ± 10.4 | 53.1 ± 11.9 | 0.978 |
Gender | |||||||
Male | 162 (45.9) | 20 (36.4) | 142 (47.7) | 0.142 | 20 (36.4) | 23 (41.8) | 0.696 |
Female | 191 (54.1) | 35 (63.6) | 156 (52.3) | 35 (63.6) | 32 (58.2) | ||
BMI | 23.6 ± 3.2 | 23.9 ± 3.6 | 23.5 ± 2.7 | 0.342 | 23.9 ± 3.6 | 23.8 ± 3.0 | 0.898 |
Surgery Type | |||||||
Simple | 164 (46.5) | 19 (34.5) | 145 (48.7) | 0.057 | 19 (34.5) | 19 (34.5) | 1.000 |
Complex | 189 (53.5) | 36 (65.5) | 153 (51.3) | 36 (65.5) | 36 (65.5) | ||
Pre-op FEV1(L) | 2.36 ± 0.42 | 2.38 ± 0.61 | 2.30 ± 0.38 | 0.406 | 2.38 ± 0.61 | 2.37 ± 0.74 | 0.933 |
*Variables used for estimating propensity score. BMI, body mass index; FEV1, forced expiratory volume in 1 s; VATS, video-assisted thoracoscopic surgery.