group

observation group (n = 40)

control group (n = 40)

statistic

P

Gender [n (%)]

Male

26 (65.00)

27 (67.50)

χ² = 0.056

0.813

Female

14 (35.00)

13 (32.50)

Age (years)

46.75 ± 4.46

45.43 ± 4.12

t = 1.380

0.171