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Table 1 General characteristics of the sample

From: Accelerometer-measured physical activity is associated with knee breadth in middle-aged Finns – a population-based study

Characteristic

Women

Men

All

N (%)

827 (54.8)

681 (45.2)

1508 (100)

Body mass index (kg/m2), mean (SD)

25.6 (4.4)

27.0 (4.0)

26.2 (4.3)

Smoking

 Non-smoker, % (n)

58.4 (483)

50.1 (341)

54.6 (824)

 Former smoker, % (n)

25.0 (207)

32.6 (222)

28.4 (429)

 Current smoker, % (n)

16.6 (137)

17.3 (118)

16.9 (255)

Education years

  < 9, % (n)

2.7 (22)

3.8 (26)

3.2 (48)

 9—12, % (n)

69.2 (572)

70.2 (478)

69.6 (1050)

  > 12, % (n)

28.2 (233)

26.0 (177)

27.2 (410)

Knee breadth dimensions

 Femoral biepicondylar breadth (mm), mean (SD)

77.8 (3.6)

87.9 (3.8)

82.4 (6.3)

 Femoral condylar mediolateral breadth (mm), mean (SD)

71.7 (3.3)

82.3 (3.6)

76.5 (6.3)

 Tibial plateau mediolateral breadth (mm), mean (SD)

70.3 (3.1)

79.9 (3.4)

74.6 (5.8)

Accelerometer data

 Moderate-to-vigorous physical activity (minutes/day), median (IQR)

56 (39—76)

72 (52—94)

63 (45—86)

 Accelerometer wear-time (minutes/day), median (IQR)

971 (933—1005)

987 (944—1023)

977 (937—1014)

  1. IQR Interquartile range, SD Standard deviation