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Table 1 Descriptive statistics of study population including all participants with 10 year follow-up, free of prevalent diabetes at baseline and with complete data. Vӓsterbotten Intervention Programme 1990–2013

From: Impact of weight maintenance and loss on diabetes risk and burden: a population-based study in 33,184 participants

  BMI at baseline (kg/m2)
<25.0 25.0–29.9 30.0–34.9 ≥35.0 Total
Total (n, %)a 18,332 55.2 11,900 35.9 2,447 7.4 505 1.5 33,184 100.0
Age at baseline, years (n, %)a
 30 3,161 65.6 1,345 27.9 257 5.3 57 1.2 4,820 100.0
 40 8,137 58.0 4,700 33.5 972 6.9 214 1.5 14,023 100.0
 50 7,034 49.0 5,855 40.8 1,218 8.5 234 1.6 14,341 100.0
Sex (n, %)a
 Men 7,186 46.5 6,986 45.2 1,147 7.4 140 0.9 15,459 100.0
 Women 11,146 62.9 4,914 27.7 1,300 7.3 365 2.1 17,725 100.0
BMI at baseline, kg/m2 (mean, SD) 22.5 1.7 26.9 1.3 31.8 1.3 37.9 3.0 25.0 3.6
BMI at 10 year follow-up, kg/m2 (mean, SD) 23.9 2.4 28.2 2.5 33.1 3.2 39.0 5.0 26.3 4.1
Change in BMI between baseline and 10 year follow-up, Δkg/m2 (mean, SD) +1.4 1.8 +1.2 2.2 +1.3 2.9 +1.1 4.5 +1.3 2.1
Relative weight change between baseline and 10 year follow-up, as % of baseline weight (mean, SD) +5.5 8.1 +3.8 8.0 +3.3 9.1 +2.3 11.5 +4.7 8.3
Baseline capillary plasma glucose concentration, mmol/L (mean, SD)
 Fasting 5.2 0.6 5.4 0.6 5.4 0.6 5.5 0.7 5.3 0.6
 2-h value 6.3 1.2 6.4 1.3 6.6 1.5 6.9 1.4 6.4 1.3
IGT (n, %)
 At baseline 354 1.9 363 3.1 142 5.8 35 6.9 894 2.7
 At 10 year follow-up 900 4.9 966 8.1 304 12.4 70 13.9 2,240 6.8
IFG (n, %)
 At baseline 763 4.2 910 7.6 236 9.6 69 13.7 1,978 6.0
 At 10 year follow-up 1,641 9.0 1,414 11.9 338 13.8 81 16.0 3,474 10.5
Year at baseline (n, %)a
 1990–1994 7,479 60.3 4,014 32.4 771 6.2 144 1.2 12,408 100.0
 1995–1999 8,173 53.2 5,765 37.5 1,177 7.7 248 1.6 15,363 100.0
 2000–2003 2,680 49.5 2,121 39.2 499 9.2 113 2.1 5,413 100.0
Education (n, %)
 Primary 6,435 35.1 5,226 43.9 1,163 47.5 260 51.5 13,084 39.4
 Any secondary 6,436 35.1 4,037 33.9 838 34.2 170 33.7 11,481 34.6
 Any tertiary 5,461 29.8 2,637 22.2 446 18.2 75 14.9 8,619 26.0
Marital status at baseline (n, %)
 Single/Widowed/Divorced 2,951 16.1 1,867 15.7 413 16.9 109 21.6 5,340 16.1
 Married/Partner 15,381 83.9 10,033 84.3 2,034 83.1 396 78.4 27,844 83.9
Family history of diabetes (n, %) 2,699 14.7 2,284 19.2 585 23.9 116 23.0 5,684 17.1
Tobacco use at baseline (n, %) 5,839 31.9 4,033 33.9 782 32.0 135 26.7 10,789 32.5
 Current smokers 4,017 21.9 2,469 20.7 498 20.4 102 20.2 7,086 21.4
 Current snuff users 2,380 13.0 2,094 17.6 383 15.7 45 8.9 4,902 14.8
  1. Percentages calculated in the column except where otherwise indicated
  2. Diabetes, IGT and IFG based on OGTT
  3. BMI Body mass index, IFG Impaired Fasting Glycaemia, IGT Impaired Glucose Tolerance, OGTT Oral glucose tolerance test, SD Standard deviation
  4. aPercentages calculated across the row