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. 2014 Sep;6(9):1230–1238. doi: 10.3978/j.issn.2072-1439.2014.07.23

Table 1. Preoperative clinical characteristics.

Characteristic Number of patients (n=476) Percentage
Gender
     Male 376 79
     Female 100 21
Smoking
     Yes 299 62.8
     Present 121 25.4
     Past 178 37.4
     No 177 37.2
Preoperative weight loss 40 8.4
     Previous thoracic surgery 4 0.8
     Hypertension 183 38.4
     Coronary artery disease 95 20
     Diabetes mellitus 69 14.5
     History of CVA/TIA 31 6.5
     COPD 57 12
BMI
     <30 450 94.5
     ≥30 26 5.5
Pulmonary function (FEV1%)
     <70 178 37.4
     ≥70 298 62.6
ASA score
     1-2 296 62.2
     3-4 180 37.8
CCI
     0 222 46.6
     1 143 30
     2 82 17.2
     3 25 5.3
     4 4 0.8

CVA, cerebrovascular disease; TIA, transient ischemic attack; COPD, chronic obstructive pulmonary disease; BMI, body mass index; FEV1%, forced expiratory volume as a percentage of forced vital capacity; ASA, American Society of Anesthesiology; VATS, video-assisted thoracic surgery; CCI, Charlson comorbidity Index.