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Table 6 Hazard ratios for bariatric surgery by the individual characteristics, stratified for BMI

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

  Women BMI 30–39 kg/m2 Men BMI 30–39 kg/m2 Women BMI > 40 kg/m2 Men BMI > 40 kg/m2
Hazard ratio 95% CI P Value Hazard ratio 95% CI P Value Hazard ratio 95% CI P Value Hazard ratio 95% CI P Value
Family income
 Low 1.3 (1.2–1.5) < 0.001 0.8 (0.7–1.0) 0.085 1.0 (0.8–1.2) 0.889 0.9 (0.4–1.7) 0.660
 Middle 1.4 (1.3–1.5) < 0.001 1.0 (0.8–1.2) 0.845 1.0 (0.8–1.2) 0.839 1.3 (0.7–2.23 0.411
 High 1.00   1.00   1.00   1.00  
Education
 Low 1.4 (1.3–1.6) < 0.001 1.9 (1.6–2.3) < 0.001 1.1 (0.9–1.3) 0.611 1.2 (0.7–1.9) 0.376
 Middle 1.7 (1.6–1.8) < 0.001 2.2 (1.9–2.5) < 0.001 1.3 (1.1–1.5) 0.005 0.9 (0.6–1.4) 0.193
 High 1.00   1.00   1.00   1.00  
Employment
 Yes 1.00   1.00   1.00   1.00  
 No 1.0 (0.9–1.1) 0.710 1.0 (0.8–1.1) 0.604 1.1 (0.9–1.2) 0.370 1.1 (0.7–1.6) 0.184
Marital Status
 Married/cohabiting 1.00   1.00   1.00   1.00  
 Single 0.8 (0.8–0.9) < 0.001 0.6 (0.5–0.7) < 0.001 0.9 (0.8–1.1) 0.322 0.7 (0.3–1.4) 0.315
  1. Cox regression analysis, multivariate models, women and men with BMI 30–39 kg/m2 and BMI > 40 kg/m2 (significant p value are in bold and underlined)