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Table 3 Association between BMI and headache, stratified analyses

From: Migraine, obesity and body fat distribution – a population-based study

  Women Men Age < 50 years Age ≥ 50 years
  No headache N Migraine OR (95% CI) N Tension-type headache OR (95% CI) N No headache N Migraine OR (95% CI) N Tension-type headache OR (95% CI) N No headache N Migraine OR (95% CI) N Tension-type headache OR (95% CI) N No headache N Migraine OR (95% CI) N Tension-type headache OR (95% CI) N
Obesity (BMI)
 Underweight 92 1.12 (0.72–1.74) 32 0.81 (0.49–1.34) 20 29 1.36 (0.52–3.56) 6 0.81 (0.27–2.40) 4 53 1.33 (0.83–2.16) 29 0.80 (0.44–1.45) 14 68 1.51 (0.73–3.12) 9 1.27 (0.64–2.51) 10
 Normal weight 4509 1.0 (Ref.) 1196 1.0 (Ref.) 1101 3010 1.0 (Ref.) 259 1.0 (Ref.) 368 3148 1.0 (Ref.) 964 1.0 (Ref.) 887 4371 1.0 (Ref.) 491 1.0 (Ref.) 582
 Overweight 4794 1.23*** (1.11–1.35) 1163 1.06 (0.96–1.17) 995 6495 1.17 (1.00–1.37) 547 1.25** (1.09–1.42) 898 3241 1.24*** (1.11–1.38) 969 1.13* (1.10–1.26) 892 8048 0.96 (0.85–1.09) 741 0.99 (0.88–1.10) 1001
 Obese 2841 1.38*** (1.24–1.54) 755 1.18** (1.05–1.32) 632 2583 1.65*** (1.38–1.98) 316 1.46*** (1.25–1.70) 422 1371 1.74*** (1.54–1.98) 650 1.45*** (1.28–1.66) 525 4053 1.00 (0.87–1.16) 421 1.00 (0.88–1.14) 529
Abdominal obesity (WC)
 Normal weight 2306 1.0 (Ref.) 693 1.0 (Ref.) 585 4327 1.0 (Ref.) 397 1.0 (Ref.) 556 2969 1.0 (Ref.) 743 1.0 (Ref.) 697 3664 1.0 (Ref.) 347 1.0 (Ref.) 444
 Abdominal overweight 3296 1.08 (0.95–1.21) 840 1.09 (0.96–1.23) 759 4342 1.25** (1.08–1.46) 392 1.28*** (1.13–1.45) 608 2397 1.25*** (1.11–1.41) 729 1.25*** (1.11–1.41) 695 5241 1.05 (0.91–1.22) 503 1.08 (0.95–1.23) 672
 Abdominal obesity 6898 1.22*** (1.09–1.36) 1595 1.15* (1.03–1.29) 1396 3468 1.41***
(1.20–1.65) 340
1.44*** (1.26–1.65) 529 2400 1.89*** (1.69–2.11) 1121 1.62*** (1.45–1.82) 917 7666 1.26** (1.10–1.45) 814 1.17* (1.04–1.32) 1008
  1. *p < 0.05; **p < 0.01; ***p < 0.001
  2. †Underweight (BMI < 18.5), normal weight (18.5 ≤ BMI < 25), overweight (25 ≤ BMI < 30), obese (BMI ≥ 30)
  3. †Normal weight (WC for women < 80 cm, for men < 94 cm), abdominal overweight (women 80–88 cm, men 94–102 cm), abdominal obesity (women > 88 cm, men > 102)
  4. OR odds ratio, CI confidence intervals, Ref. reference category, BMI body mass index, WC waist circumference
  5. The analyses are adjusted for age, sex, smoking, depression (HADS-D) and presence of diabetes