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Table 1 Baseline characteristics according to study group.

From: Comparative effectiveness of lifestyle interventions on cardiovascular risk factors among a Dutch overweight working population: A randomized controlled trial

Ā 

Control

(n = 92)

Phone

(n = 91)

Internet

(n = 93)

All

(n = 276)

p-value

Male (%)

70.7

68.1

68.8

69.2

0.930

Age (SD), yrs

43.8 (9.4)

43.2 (9.6)

44.9 (8.5)

44.0 (9.2)

0.410

Body weight (SD), kg

92.3 ( 11.3)

94.4 (15.6)

94.0 (13.7)

93.5 (13.6)

0.540

Height (SD), cm

177.8 (9.0)

177.6 (10.1)

176.7 (8.4)

177.4 (9.2)

0.664

BMI (SD), kg/m2

29.2 (2.7)

29.8 (3.3)

30.0 (3.4)

29.7 (3.1)

0.141

Highly educated (%)

59.8

53.8

57.0

56.9

0.720

Smoking (%ā‰„ 1 unit/day)

16.3

13.2

11.8

13.8

0.664

Medication for comorbidity (%)

15.2

15.4

12.9

14.5

0.907

Cardiovascular risk factors

n = 82

n = 86

n = 91

n = 259

Ā 

Waist (SD), cm

101.4 (8.9)

102.1 (10.9)

102.6 (9.7)

102.0 (9.9)

0.696

SSK (SD), mm

80.9 (24.1)

88.6 (28.8)

90.5 (29.8)

86.8 (28.0)

0.062

SBP (SD), mmHg

135.9 (15.0)

135.1 (15.3)

135.9 (16.6)

135.6 (15.6)

0.940

DBP (SD), mmHg

87.9 (10.8)

88.4 (9.9)

90.0 (10.0)

88.8 (10.2)

0.345

TC (SD), mmol/la

5.0 (0.8)

4.9 (0.9)

4.9 (0.9)

4.9 (0.8)

0.769

Predicted VO2max (SD), ml/kg/min)b

38.9 (5.6)

37.6 (6.9)

36.7 (6.3)

37.7 (6.4)

0.092

  1. Abbreviations: SD, standard deviation; BMI, body mass index; Waist, waist circumference; SSK, sum of skinfolds; SBP, systolic blood pressure; DBP, diastolic blood pressure; TC, total cholesterol; VO2max, maximal oxygen uptake, a n = 253 (control: n = 79, phone: n = 85, Internet: n = 89), b n = 245 (control: n = 75, phone: n = 83, Internet: n = 87).