Males

N = 469 F (%)

Females

N = 282 F (%)

Total (%)

P value

Smoking

122 (26.1)

2 (1.4)

(16.5)

<0.0001*

Analgesics

· Yes

· No

· Once

304 (46.9)

123 (26.3)

41 (8.8)

209 (74.1)

51 (18.8)

22 (7.7)

69.2

22.6

8.2

0.08

Alcohol

· Yes

· No

· Once

78 (16.7)

359 (76.1)

31 (6.6)

0 (0.0)

(97.9)276

6 (2.1)

10.3

89.6

4.4

Sedatives

· Yes

· No

· Once

25 (5.3)

430 (91.9)

13 (2.8)

15 (5.3)

261 (92.7)

6 (2.1)

5.2

93.7

1.1

0.91

Stimulant

· Yes

· No

· Once

30 (6.4)

431 (92.1)

7 (1.5)

4 (1.4)

274 (97.2)

4 (1.4)

4

94.6

1.4

0.01*