Table 2

Baseline characteristics by study group and gender

Runners' Association

Community Controls

Ever-Runners

Never-Runners


Female (n = 82)

Male (n = 410)

Female (n = 163)

Male (n = 211)

Female (n = 93)

Male (n = 472)

Female (n = 152)

Male (n = 149)


Mean (SE)

Age (years)

59.9 (0.5)a

62.0 (0.3)a

65.5 (0.5)

64.6 (0.5)

60.3 (0.5)a

62.0 (0.3)a

65.7 (0.6)

65.5 (0.6)

Education (years)

16.3 (0.3)

16.6 (0.1)a

15.8 (0.2)

17.5 (0.2)

16.4 (0.3)a

16.8 (0.1)

15.7 (0.2)

17.3 (0.2)

BMI (kg/m2)

21.6 (0.2)a

23.2 (0.1)a

23.2 (0.3)

25.0 (0.2)

21.6 (0.2)a

23.3 (0.1)a

23.4 (0.3)

25.3 (0.3)

Pain (VAS 0–100; 0 = no pain)

20.9 (2.6)a

20.7 (1.2)

27.6 (2.1)

23.0 (1.6)

19.6 (2.4)a

20.5 (1.1)

28.8 (2.1)

24.3 (1.9)

Hospital days/past year

0.09 (0.1)a

0.31 (0.1)

0.45 (0.1)

0.25 (0.1)

0.08 (0.0)a

0.28 (0.1)

0.48 (0.2)

0.33 (0.1)

Running miles (week)

19.4 (1.3)a

26.9 (0.7)a

0.99 (0.4)

3.0 (0.4)

17.4 (1.34)a

24.3 (0.7)a

0.9 (0.4)

1.3 (0.4)

Exercise minutes (week)

310.8 (19.8)a

314.2 (10.3)a

115.8 (10.0)

129.0 (9.1)

283.9 (18.9)a

292.2 (9.7)a

118.2 (10.8)

121.6 (9.4)

Cigarette (packs/day)

0.09 (0.04)

0.01 (0.04)a

0.13 (0.0)

0.05 (0.0)

0.05 (0.0)a

0.01 (0.0)a

0.16 (0.0)

0.06 (0.0)

Alcohol (oz./day)

1.0 (0.1)

1.1 (0.1)a

1.0 (0.8)

1.4 (0.1)

0.98 (0.1)

1.14 (0.1)a

1.01 (0.1)

1.46 (0.1)

Subjects (%) with history of

Arthritis

45

33

47

36

42

33

49

36

Fractures

54

53

41

52

51

52

42

54

Cancer

0

0.002

0

0.009

0

0.004

0

0.007


ap < 0.05 male or female Runners' Association versus matched community controls or male or female Ever-Runners versus matched gender Never-Runners. BMI, body mass index; VAS, visual analog scale.

Bruce et al. Arthritis Research & Therapy 2005 7:R1263-R1270   doi:10.1186/ar1825

Open Data