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Table 1 Baseline characteristics of the KNW study sample (N = 462)

From: Long-term effects of a web-based cancer aftercare intervention on moderate physical activity and vegetable consumption among early cancer survivors: a randomized controlled trial

  Intervention group (N = 231) Control group (N = 231) P 1
Demographic characteristics
 Female, n (%) 183 (79.2) 186 (80.5) .728
 Age, M (SD) 55.6 (11.5) 56.2 (11.3) .596
 Marital status, with partner2, n (%) 193 (83.5) 184 (79.7) .280
 Education level3 n (%)
  Low 76 (32.9) 97 (42.0) .113
  Medium 76 (32.9) 70 (30.3)  
  High 79 (34.2) 64 (27.7)  
 Employed, yes, n (%) 122 (52.8) 111 (48.1) .306
 Income below average, n (%) 28 (12.1) 42 (18.2) .192
 Income average, n (%) 84 (36.4) 78 (33.8)  
 Income above average, n (%) 119 (51.5) 111 (48.3)  
Cancer-related characteristics
 Breast cancer, n (%) 162 (70.1) 164 (71.0) .838
 Other types of cancer, n (%) 69 (29.9) 67 (29.0)  
 Treatment, n (%)
  Surgery, chemotherapy, radiation 86 (37.2) 108 (46.8) .046*
  Surgery, chemotherapy 61 (26.4) 48 (20.8)  
  Surgery, radiation 46 (19.9) 30 (13.0)  
  Other 38 (16.5) 45 (19.5)  
 Aftercare, yes, n (%) 145 (62.8) 141 (61) .702
 Number of aftercare activities, M (SD) 1.1 (1.1) 1 (1.0) .402
 Comorbidity, yes, n (%) 62 (26.8) 63 (27.3) .917
 Number of comorbidities, M (SD) 0.3 (0.6) 0.4 (0.7) .600
 Time since completion primary treatment (weeks), M (SD) 25.1 (13.5) 23.4 (12.9) .187
 BMI, M (SD) 26.0 (5.0) 26.5 (4.9) .295
 BMI, n (%)    .593
   < 18.5, underweight 2 (0.9) 3 (1.3)  
  18.5–24.9, normal weight 105 (45.5) 93 (40.3)  
  25.0–29.9, overweight 90 (39.0) 96 (41.6)  
  30.0–34.9, obese 24 (10.4) 32 (13.9)  
   ≥ 40, morbidly obese 10 (4.3) 7 (3.0)  
Lifestyle-related characteristics
 Physical activity, M (SD)4
  Weekly days > 30 min PA; 4.9 (1.9) 4.6 (2.0) .089
  Light PA min p/w 1521.5 (897.9) 1430.2 (897.7) .281
  Moderate PA min p/w 595.9 (620.5) 526.5 (546.5) .200
  Vigorous PA min p/w 231.0 (323.9) 238.0 (426.0) .844
 Dietary behavior, M (SD)
  Vegetable intake, g p/d 138.5 (67.9) 124.2 (57.5) .015*
  Fruit intake, servings p/d 1.8 (1.2) 1.6 (1.0) .071
  Whole grain bread, slices p/d 3.1 (1.8) 2.8 (1.5) .046*
  Fish intake, servings per week 1.9 (1.9) 1.4 (1.3) .001**
  1. Note.: Abbreviations: BMI body mass index, M mean, SD standard deviation, KNW Kanker Nazorg Wijzer
  2. 1 p-value for dichotomous variables from chi-square test; for continuous variables independent t-test; significant result (p <0.05)
  3. 2married, cohabiting partners
  4. 3Low: lower vocational education, medium general secondary education; Medium: secondary vocational education, higher general secondary education; High: higher vocational education, university education
  5. 4Intervention group N = 225; Control group N = 226
  6. *p < .05< **p < .01