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Table 1 Baseline characteristics for all subjects, by treatment group

From: Phone and e-mail counselling are effective for weight management in an overweight working population: a randomized controlled trial

  Phone
n = 462
Internet
n = 464
Control
n = 460
All
n = 1386
Male, No. (%) 321 (69.5) 302 (65.1) 306 (66.5) 929 (67.0)
Age, mean (SD), y 43 (8.8) 43 (8.4) 43 (8.7) 43 (8.6)
BMI (SD), kg/m2 29.5 (3.5) 29.6 (3.4) 29.6 (3.7) 29.6 (3.5)
Highly educated, No. (%)a 271 (60.1) 281 (62.2) 255 (58.8) 807 (60.4)
Married/cohabiting, No. (%)a 380 (84.3) 384 (85.1) 368 (84.8) 1132 (84.7)
Born in the Netherlands, No. (%)b 416 (92.7) 417 (93.3) 401 (94.1) 1234 (93.3)
Medication for certain conditions, No. (%)c 80 (18.6) 77 (17.8) 67 (16.5) 224 (17.7)
Smokes ≥ 1 unit/day, No. (%)c 73 (16.3) 59 (13.2) 65 (15.3) 197 (14.9)
Weight loss attempts previous 2 yrs, No. (%)e     
0 attempts 147 (32.9) 141 (31.6) 141 (33.2) 429 (32.5)
1 – 3 attempts 212 (47.7) 202 (45.3) 196 (46.1) 610 (46.3)
4 or more attempts 88 (19.7) 103 (23.1) 88 (20.7) 279 (21.2)
Tried to prevent weight gain in previous 2 yrs, No. (%)e 353 (79.1) 370 (83.0) 347 (81.5) 1070 (81.2)
At baseline wants to, No. (%)e     
Loose weight 386 (86.2) 373 (83.8) 363 (85.6) 1122 (85.2)
Prevent weight gain 56 (12.5) 67 (15.1) 55 (13.0) 178 (13.5)
Neither are important 6 (1.3) 4 (1.6) 5 (1.1) 17 (1.3)
  1. SD = Standard Deviation, a n = 1337, b n = 1322, c n = 1269, c n = 1320, e n = 1318