Skip to main content
. 2017 May 23;17:61. doi: 10.1186/s12893-017-0254-6

Table 1.

Comparison of participants and non-participants

Variable Participants (n = 207) Non-participants (n = 155) P-value
Gender
 Male 56 (27.1%) 47 (30.2%) 0.50
 Female 151 (72.9%) 108 (69.7%)
Age
 (mean, sd) 46.59 (13.39) 39.57 (12.52) 0.00
SES
 (mean, sd) 0.64 (1.05) 0.64 (1.18) 0.53
BMI
n = 340 n = 200 n = 140 0.89
 (mean, sd) 27.43 (15.12) 27.78 (18.12)
ASA classification
n = 279 n = 171 n = 108 0.53
 ASA 1 80 (46.8%) 58 (53.7%)
 ASA 2 82 (48.0%) 39 (36.1%)
 ASA 3 7 (4.1%) 10 (9.3%)
 ASA 4 2 (1.2%) 1 (0.9%)
Intoxications†
n = 322 n = 194 n = 128 0.26
 Yes 105 (54.1%) 64 (47.8%)
 No 89 (45.9%) 70 (52.2%)
Type of surgery
 Gynecological 107 (51.7%) 60 (38.7%) 0.01
 Surgical 100 (48.3%) 95 (61.3%)
Major complications during or after surgerya
 Yes 9 (4.3%) 7 (4.5%) 0.94
 No 198 (95.7%) 148 (95.5%)

Data are presented as frequencies and percentages, unless otherwise stated. The values that differ significantly are highlighted in bold

SD standard deviation, SES Social Economic Status, Scores are based on geographic location, BMI Body Mass Index, ASA American Society of Anesthesiologists classification

† Defined as: Any current use of alcohol, tobacco and/or drugs

aDefined as: Conversion to an open procedure, re-surgery within 30 days, injury of the bladder, intestine or liver during surgery, or drainage of an abscess after surgery