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Table 5 Unadjusted and adjusted hazard ratios for bariatric surgery by the individual characteristics

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

  Univariate, model 1 Adjusted for BMI, model 2 Multivariate, model 3
  Hazard ratio, 95% CI P value Hazard ratio, 95% CI P Value Hazard ratio, 95% CI P value
Women
Family income
• Low 1.9 (1.8–2.0) 0.001 1.6 (1.5–1.7) 0.001 1.4 (1.3–1.5) 0.001
• Middle 1.7 (1.6–1.8) 0.001 1.5 (1.4–1.6) 0.001 1.4 (1.3–1.5) 0.001
• High 1.00   1.00   1.00  
Education
• Low 2.2 (2.0–2.3) 0.001 1.8 (1.6–1.9) 0.001 1.7 (1.5–1.8) 0.001
• Middle 2.1 (2.0–2.2) 0.001 2.1 (2.0–2.2) 0.001 2.1 (2.0–2.1) 0.001
• High 1.00   1.00   1.00  
Employment
• Yes 1.00   1.00   1.00  
• No 1.4 (1.3–1.5) 0.001 1.1 (1.0–1.2) 0.001 0.9 (0.9–0.9) 0.010
Marital Status
• Married 1.00   1.00   1.00  
• Single 1.1 (1.0–1.1) 0.001 0.9 (0.9–0.9) 0.001 0.9 (0.9–0.90) 0.010
Men
Family income
• Low 1.3 (1.1–1.5) 0.001 0.9 (0.8–1.0) 0.050 0.8 (0.7–0.9) 0.020
• Middle 1.4 (1.3–1.6) 0.001 1.1 (1.0–1.2) 0.110 1.0 (0.9–1.2) 0.740
• High 1.00   1.00   1.00  
Education
• Low 3.5 (3.1–4.0) 0.001 2.2 (1.9–2.5) 0.001 2.1 (1.9–2.4) 0.001
• Middle 3.1 (2.8–3.4) 0.001 2.8 (2.5–3.1) 0.001 2.6 (2.4–2.9) 0.001
• High 1.00   1.00   1.00  
Employment
• Yes 1.00   1.00   1.00  
• No 1.1 (1.0–1.2) 0.020 0.8 (0.8–0.9) 0.001 1.0 (0.9–1.1) 0.320
Marital Status
• Married 1.00   1.00   1.00  
• Single 0.8 (0.7–0.9) 0.001 0.5 (0.5–0.6) 0.001 0.6 (0.5–0.7) 0.001
  1. Cox regression analysis with univariate, adjusted for BMI, and multivariate models (the highest hazard ratios are in bold and underlined)