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Table 4 Number of patients and risk of acute care use for hypertension-related disease among obese patients with hypertension who underwent non-bariatric surgery

From: Association of bariatric surgery with risk of acute care use for hypertension-related disease in obese adults: population-based self-controlled case series study

Time interval and surgery Number of patients Risk, % (95% CI)a aOR (95% CI)b P value
Cholecystectomy (n = 378)    
 13–24 months before surgery 64 16.9 (13.1–20.7) Reference
 1–12 months before surgery 129 34.1 (29.3–38.9) 2.13 (1.56–2.91) <0.0001
 0–12 months after surgery 135 35.7 (30.9–40.6) 2.24 (1.65–3.06) <0.0001
 13–24 months after surgery 67 17.7 (13.9–21.6) 1.05 (0.74–1.49) 0.79
Hysterectomy (n = 112)    
 13–24 months before surgery 20 17.9 (10.7–25.1) Reference
 1–12 months before surgery 42 37.5 (28.4–46.6) 2.26 (1.29–3.95) 0.004
 0–12 months after surgery 34 30.4 (21.7–39.0) 1.78 (1.002–3.18) 0.049
 13–24 months after surgery 21 18.8 (11.4–26.1) 1.05 (0.56–1.99) 0.87
Spinal fusion (n = 61)    
 13–24 months before surgery 11 18.0 (8.1–28.0) Reference
 1–12 months before surgery 20 32.8 (20.7–44.9) 1.92 (0.89–4.14) 0.10
 0–12 months after surgery 17 27.9 (16.3–39.4) 1.60 (0.73–3.53) 0.24
 13–24 months after surgery 11 18.0 (8.1–28.0) 1.00 (0.42–2.37) 0.99
Mastectomy (n = 30)    
 13–24 months before surgery 5 16.7 (25.1–30.8) Reference
 1–12 months before surgery 11 36.7 (18.4–55.0) 2.34 (0.78–6.98) 0.13
 0–12 months after surgery 9 30.0 (12.6–47.4) 1.87 (0.61–5.78) 0.28
 13–24 months after surgery 5 16.7 (25.1–30.8) 1.00 (0.28–3.55) 0.99
  1. CI confidence interval, aOR adjusted odds ratio
  2. aAt least one acute care use (ED visit or unplanned hospitalization) for HTN-related disease
  3. bAdjusted odds ratios are for each 12-month period versus the reference period (i.e., 13–24 months before surgery), as calculated with conditional logistic regression