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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