Table 1. Demographic Data in the Open Gastrectomy (OG) and Laparoscopic Gastrectomy (LG) Groups.
| OG group (n = 63) |
LG Group (n = 60) |
P value | |
|---|---|---|---|
| Gender (F/M) | 23/40 | 22/38 | 1.000 |
| Age (yr) | 72.2 ± 4.6 | 71.6 ± 5.0 | 0.484 |
| BMI (kg/m2) | 23.7 ± 3.2 | 24.6 ± 8.0 | 0.374 |
| ASA physical status (I/II) | 14/49 | 23/37 | 0.080 |
| Education level (less than high school/ high school/college graduate) | 34/23/6 | 29/20/11 | 0.391 |
| Heavy drinker* (yes/no) | 7/56 | 5/55 | 0.830 |
| Any tobacco exposure (yes/no) | 26/37 | 27/33 | 0.814 |
| Preoperative baseline MMSE (0-30) | 26.7 ± 1.7 | 27.0 ± 1.7 | 0.338 |
Data are expressed as the means ± SD or number. BMI: body mass index, ASA: American Society of Anesthesiologists, MMSE: Mini-Mental State Examination. *Defined as current intake of alcohol, on average, 3-4 drinks per day at least four times per week.