Smoking category

Mild activity

(n = 76)

Moderate activity

(n = 56)

Vigorous activity

(n = 1)

Total

% of

Smoking

% of

Total

Test statistic

p-value

No. (%)

No. (%)

No. (%)

Light (1 - 10 cigs/d)

(% Light smoker)

8

(23.5)

25

(73.5)

1 (2.9)

34

(100)

25.9

6.8

Fisher’s exact = 28.9

p < 0.001

Moderate (11 - 20 cigs/d)

(% Moderate smoker)

34

(60.7)

22

(39.2)

0 (0.0)

56

(100)

42.7

11.2

Heavy (21 - 39 cigs/d)^*

(%Heavy smoker)

34

(82.9)

7

(7.1)

0 (0.0)

41

(100)

31.4

8.2

SUM

(% Smoker)

76

(58.0)

54

(41.2)

1 (0.7)

131

(100)

100

26.2