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. Author manuscript; available in PMC: 2019 Nov 1.
Published in final edited form as: Drug Alcohol Depend. 2018 Sep 12;192:172–178. doi: 10.1016/j.drugalcdep.2018.07.033

Table 2.

Odds ratios (ORs) from multi-level models examining individual- and study- level predictors of drinking to predict drinking in the 6 hours before injury among current drinkers by injury causea

Traffic injuries Violence-related injuries Falls Other injuries
(N) (2 619) (2 281) (4 024) (5 365)

OR (95%CI) OR (95%CI) OR (95%CI) OR (95%CI)

Level 1 effects
 Demographics
   Male 1.48 (1.26–1.72)*** 1.40 (1.10–1.80)** 0.94 (0.79–1.11) 0.69 (0.59–0.81)***
   Age < 30 years 1.02 (0.85–1.23) 1.01 (0.84–1.22) 0.76 (0.61–0.969)** 1.00 (0.87–1.15)
   Primary education b 0.92 (0.73–1.16) 1.02 (0.83–1.25) 1.12 (0.87–1.45) 1.29 (1.05–1.59)**
   College education b 0.67 (0.50–0.91)** 0.99 (0.74–1.34) 0.92 (0.76–1.11) 0.99 (0.78–1.25)
   Employed b 0.83 (0.71–0.97)** 1.03 (0.78–1.36) 0.69 (0.57–0.84)** 0.68 (0.57–0.80)***
 Alcohol volume past yeard 1.40 (1.27–1.54)*** 1.35 (1.20–1.52)*** 1.46 (1.33–1.60)*** 1.51 (1.41–1.61)***
 Drinking pattern Infrequent light/non-heavy 0.92 (0.65–1.32) 1.07 (0.65–1.75) 0.96 (0.65–1.41) 0.80 (0.61–1.05)
 Frequent light/non-heavy Ref. (OR=1) Ref. (OR=1) Ref. (OR=1) Ref. (OR=1)
 Infrequent light/occasional heavy 1.17 (0.85–1.60) 1.99 (1.27–3.10)* 2.26 (1.61–3.17)*** 1.32 (1.00–1.74)
 Frequent light/occasional heavy 0.98 (0.73–1.32) 2.01 (1.44–2.81)** 1.81 (1.40–2.35)*** 1.11 (0.88–1.41)
 Frequent heavy 1.57 (1.06–2.34) 2.57 (1.98–3.34)*** 2.86 (2.24–3.66)*** 1.71 (1.38–2.14)***
Level 2 effects
 Detrimental drinking pattern (DDP)e 1.54 (1.06–2.24)* 1.38 (1.12–1.71)* 1.13 (0.82–1.55) 1.12 (0.79–1.59)
 European ambulance system 0.54 (0.15–2.00) 2.16 (0.98–4.75) 0.76 (0.38–1.54) 1.04 (0.48–2.29)
 Study-level average volumef 1.15 (0.86–1.52) 1.03 (0.88–1.20) 0.91 (0.75–1.11) 0.73 (0.57–0.93)*
 Residual variances (coefficients) 0.77 (0.20–1.34)*** 0.31 (0.11–0.51)** 0.50 (0.04–0.95)* 0.36 (0.05–0.67)*
*

Notes: p<0.05;

**

p<0.01;

***

p<0.001. C.I. = Confidence Interval

a

Injury causes are not mutually exclusive.

b

Reference = secondary school education.

c

Employed 30 hours per week (reference=else).

d

Individual volume consumption (in 16 ml standard drink, log-transformed).

e

Combination of four policy measures: legal intoxication level for driving, random breath test, sanction on driving under the influence (DUI), open container law (high value more restrictive).

f

Study mean of volume consumption (in 16 ml standard drink, log-transformed). Sample size (n) for each causal injury group reflects number of observations retained in multi-level regression models (cases with missing values are dropped from analysis).