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. Author manuscript; available in PMC: 2013 Jun 14.
Published in final edited form as: JAMA. 2012 Jun 20;307(23):2516–2525. doi: 10.1001/jama.2012.6147

Table 4.

Pre- and Postoperative Predictors of Alcohol Use Disorder in the First or Second Postoperative Year

Characteristics Group N n(%) Adjusted OR(95%CI) P

1 year pre-op 2 year pre-op 1 year pre-op 2 year pre-op
Preoperative
 Female sex 1454 1454 94(6.5) 110(7.6) 1 [Reference] -
 Male sex 386 386 38(9.8) 45(11.7) 2.30(1.63–3.26) <.0001
 Age*AUD interaction - - - - - 0.03
 Age, per 10 years youngerb - - - - - <.0001
  Age, per 10 years younger with AUD - - - - 1.32(1.03–1.69) 0.03
  Age, per 10 years younger without AUD - - - - 1.80(1.53–2.13) <.0001
 Non-smoker 1800 1800 125(6.9) 148(8.2) 1 [Reference] -
 Smoker 40 40 7(17.5) 7(17.5) 1.51(0.64–3.55) 0.34
 Does not consume alcohol regularly 1709 1709 88(5.2) 108(6.3) 1 [Reference] -
 Regular (≥2/week) alcohol consumption 131 131 44(33.6) 47(35.9) 7.60(4.94–11.68) <.0001
 No Alcohol Use Disorder 1695 1695 72(4.3) 93(5.5) 1 [Reference] -
 Alcohol Use Disorderc 145 145 60(41.4) 62(42.8) - 0.17
  Alcohol Use Disorder at age 20 - - - - 4.54(2.15–9.56) <.0001
  Alcohol Use Disorder at age 45 - - - - 9.90(6.82–14.38) <.0001
  Alcohol Use Disorder at age 60 - - - - 15.82(8.47–29.57) <.0001
 No recreational drug use 1759 1759 117(6.7) 135(7.7) 1 [Reference] -
 Recreational drug use 81 81 15(18.5) 20(24.7) 1.10(0.57–2.09) 0.78
 ISEL belonging score, per 1 point lower - - - - 1.07(1.01–1.13) 0.03
 SF-36 Mental component score, per 10 fewer points - - - - 0.99(0.83–1.17) 0.87
 No treatment for psychiatric or emotional problems 788 788 51(6.5) 66(8.4) 1 [Reference] -
 Treatment for psychiatric or emotional problems 1052 1052 81(7.7) 89(8.5) 0.65(0.45–0.94) 0.02
Surgical Procedure <.01
 Laparoscopic adjustable gastric band 470 470 24(5.1) 27(5.7) 1 [Reference] -
 Roux-en-Y gastric bypass 1286 1286 103(8.0) 122(9.5) 2.12(1.43–3.15) <.001
 Banded gastric bypass 26 26 1(3.9) 0(0.0) 0.24(0.02–2.55) 0.24d
 Sleeve gastrectomy 43 43 1(2.3) 3(7.0) 0.84(0.26–2.78) 0.77d
 Biliopancreatic diversion with switch 15 15 3(20.0) 3(20.0) 1.82(0.39–8.55) 0.45d
Postoperative
 Non-smoker 1541 1356 106(6.9) 118(8.7) 1 [Reference] -
 Smoker 133 150 25(18.8) 36(24.0) 1.83(1.22–2.76) <.01
 No past-year recreational drug use 1610 1438 112(7.0) 128(8.9) 1 [Reference] -
 Past-year recreational drug use 63 60 19(30.2) 27(45.0) 3.09(1.76–5.43) <.0001
 SF-36 Mental component score, per 10 fewer points - - - - 1.28(1.12–1.45) <.001
 No treatment for psychiatric or emotional problems 1029 896 69(6.7) 77(8.6) 1 [Reference] -
 Treatment for psychiatric or emotional problems 639 591 62(9.7) 77(13.0) 1.73(1.23–2.45) <.01
Time
 First postoperative year 1840 - 132(7.2) - 1 [Reference] -
 Second postoperative year - 1840 - 155(8.4) 1.55(1.24–1.95) <.001

Abbreviations: Alcohol Use Disorder, AUD CI, confidence interval, OR, odds ratio, ISEL, Interpersonal Support Evaluation List

a

Odds ratios and associated 95% CIs were adjusted for all other variables in the table. N=1840 of 1933 due to missing covariate data.

b

OR differs by AUD status.

c

OR differs by age. Three examples are provided. The reference category for each is no AUD at the same age.

d

Analysis is underpowered to detect a difference between this surgical procedure and the reference category.