Table 2 Comparisons of baseline characteristics between the case group and the control group
CharacteristicsCase group (n=210)Control group (n=210)P value
Age (year, mean ± SD)58.4 ± 8.957.4 ± 9.10.256
Sex (n, %)0.696
  Male107 (51.0%)103 (49.0%)
  Female103 (49.0%)107 (51.0%)
BMI (kg/m2, mean ± SD)22.3 ± 1.722.5 ± 1.80.242
Smoking history (n, %)0.470
  Yes67 (31.9%)74 (35.2%)
  No143 (68.1%)136 (64.8%)
Alcohol history (n, %)0.545
  Yes75 (35.7%)81 (38.6%)
  No135 (64.3%)129 (61.4%)
  • Abbreviation: BMI, body mass index.