Medical problem

(not exclusive)

Mild activity

(n = 220)

Moderate activity

(n = 259)

Vigorous activity

(n = 21)

Test statistic p-value

No.

%

No.

%

No.

%

Obesity (n = 31)

27/31

87.1

4/31

12.9

0/31

0.0

X2(df = 2) = 16.62 p < 0.001

No obesity (n = 469)

Total (n = 500)

193*

220

87.7

44.0

255

259

98.4

51.8

21

21

100.0

4.2

Anemia (n = 29)

20/29

68.9

9/29

31.0

0/29

0.0

X2(df = 2) = 8.22 p = 0.027

No anemia (n = 471)

Total (n = 500)

200*

220

90.9

44.0

250

259

96.5

51.8

21

21

10.0

4.2

DM (n = 4)

3/4

75.0

¼

25.0

0/4

0.0

X2(df = 2) = 1.61 p = 0.193

No DM (n = 496)

217*

220

98.6

44.0

258

259

99.6

51.8

21

21

100.0

44.0

CHD (n = 12)

12/12

100.0

0/12

0.0

0/12

0.0

X2(df = 2) = 15.65 p < 0.001

No CHD (n = 488

Total (n = 500)

208*

220

94.5

44.0

259

259

100.0

51.8

21

21

100.0

4.2

BA (n = 19)

15/19

78.9

4/19

21.1

0/19

0.0

X2(df = 2) = 20.65 p < 0.001

No BA (n = 481)

Total (n = 500)

205*

220

93.2

44.0

240

259

92.7

51.8

21

21

100.0

4.2

Epilepsy (n = 3)

3/3

100.0

0/3

0.0

0/3

0.0

Fisher’s exact = 3.84 p < 0.001

No epilepsy (n = 497)

Total (n = 500)

217*

220

44.0

256

259

98.8

51.8

18

21

85.7

4.2

HBV (n = 22)

No HBV (n = 478)

Total (n = 500)

14

206*

220

63.6

93.6

44.0

8

251

259

36.4

96.9

51.8

0

21

21

0.0

100.0

44.0

X2(df = 2) = 4.04 p = 0.237

HCV (n = 56)

No HCV (n = 444)

Total (n = 500)

31

189*

220

55.3

85.9

44.0

24

235

259

42.9

90.7

51.8

1

20

21

1.8

95.2

4.2

X2(df = 2) = 3.70 p = 0.295