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Table 1 Distribution and percentages of the female study population by BMI and the individual characteristics

From: Socioeconomic factors, body mass index and bariatric surgery: a Swedish nationwide cohort study

  Study population, n (% of total population) Average BMI BMI < 25 at baseline BMI 25–29 at baseline BMI 30–39 at baseline BMI ≥40 at baseline
Median age = 28, range
less than median 463,067   342,894 88,294 29,969 1910
More than median 351,636   252,435 73,823 23,636 1742
Study population, n (% of total population) 814,703 23.50 595,329 (73.1%) 162,117 (19.9%) 53,605 (6.6%) 3652 (0.4%)
Operated, n (% of operated) 7433 32.31 843 (11.4%) 2025 (27.2%) 3700 (49.8%) 865 (11.6%)
Family Income, n (% of total)
• Low (25%) 204,204 23.74 142,812 (69.9%) 44,138 (21.6%) 16,135 (7.9%) 1119 (0.6%)
• Middle (50%) 407,104 23.45 299,302 (73.5%) 80,006 (19.7%) 26,013 (6.4%) 1783 (0.4%)
• High (25%) 203,395 23.34 153,306 (75.3%) 37,973 (18.7%) 11,457 (5.6%) 750 (0.4%)
Education, n (% of total)
• Low 63,615 (7.8%) 23.75 43,877 (69.0%) 13,751 (21.6%) 5540 (8.7%) 447 (0.7%)
• Middle 163,872 (20.1%) 23.47 118,773 (72.5%) 32,887 (20.1%) 11,421 (6.9%) 791 (0.5%)
• High 587,216 (72.1%) 23.47 432,679 (73.7%) 115,479 (19.7%) 36,644 (6.2%) 2414 (0.4%)
Employment, n (% of total)
• Yes 584,962 (71.8%) 23.43 432,377 (73.9%) 114,311 (19.5%) 35,979 (6.2%) 2295 (0.4%)
• No 229,741 (28.2%) 23.65 162,952 (70.9%) 47,806 (20.8%) 17,626 (7.7%) 1357 (0.6%)
Marital status, n (% of total)
• Married/cohabiting 353,317 (43.4%) 23.22 266,645 (75.5%) 66,067 (18.7%) 19,472 (5.5%) 1133 (0.3%)
• Single 461,384 (56.6%) 23.70 328,684 (71.2%) 96,050 (20.8%) 34,133 (7.4%) 2519 (0.6%)
  1. The highest percentages are in bold and underlined. Follow up for bariatric surgery between 2005 and 2012
  2. All percentages are row percentages except for Study population, second column