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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Drug Alcohol Depend. 2014 Apr 28;140:168–174. doi: 10.1016/j.drugalcdep.2014.04.018

Table 1.

Characteristics of patients readmitted and not readmitted
Cox proportional hazard
Entire sample
Readmitted
Not readmitted
Unadjusted
(n = 383)
(n = 162)
(n = 221)
Hazard CL P-value
n % n % n % Ratio
Age (mean, sd) 42.77 10.35 43.38 9.82 42.32 10.70 1.01 .99, 1.02 0.45
Gender
Female 165 43% 65 40% 100 45% 1.00
Male 218 57% 97 60% 121 55% 1.18 .87, 1.62 0.29
Education
Less than high school 97 25% 42 26% 54 24% 1.06 .73, 1.54 0.77
High school education 179 47% 79 49% 100 45% 1.00
More than high school 107 28% 41 25% 67 30% 0.87 .60, 1.28 0.48
Marital status
Living as married 65 17% 21 13% 44 20% 0.67 .42, 1.09 0.11
Single never married 173 45% 75 46% 98 44% 1.00
Divorced, separated, widowed 145 38% 66 41% 79 36% 1.02 .73, 1.42 0.91
Housing status
Stable 214 56% 75 46% 137 62% 1.00
Unstable 169 44% 87 54% 84 38% 1.65 1.22, 2.25 0.001
Number of children (mean, sd) 1.99 1.93 1.94 1.91 2.04 1.94 0.97 .91, 1.04 0.49
Employment status
Employed 61 16% 17 11% 44 20% 0.51 .30, .87 0.01
Seasonal work 15 4% 11 5% 6 3% 1.25 .68, 2.30 0.47
Seeking employment 163 42% 76 47% 85 38% 1.00
Not in labor force 140 36% 57 36% 83 37% 0.82 .58, 1.14 0.24
Other 4 1% 1 1% 3 2% 0.38 .04, 3.42 0.39
Primary support problems 298 78% 123 76% 175 79% 0.92 .62, 1.38 0.70
Social environment problems 341 89% 148 91% 193 87% 1.50 .85, 2.65 0.16
Legal problems 65 17% 29 18% 38 17% 1.07 .70, 1.64 0.75
Patient lives with
Alone 168 44% 79 49% 90 41% 1.35 .96, 1.91 0.09
Family 138 36% 54 33% 84 38% 1.00
Non-family 77 20% 29 18% 47 21% 0.99 .63 1.54 0.96
Secondary diagnosis drug related 107 28% 45 28% 62 28% 1.01 .72, 1.41 0.97
Number of diagnosed psychiatric problems (mean, sd) 0.18 0.51 0.18 0.50 0.18 0.52 1.08 .79, 1.48 0.64
Number of medical conditions (mean, sd) 0.76 0.96 0.77 0.92 0.74 0.99 1.05 .89, 1.23 0.58
GAF on admission (mean, sd) 43.63 8.89 41.38 7.86 45.36 9.25 0.96 .94, .99 0.002
History of delirium tremens or seizures 119 31% 56 35% 63 29% 1.26 .91, 1.74 0.17
Alcohol use in the last 30 days
< = 29 195 51% 84 52% 119 54% 1.00
=30 188 49% 78 48% 102 46% 1.17 .86, 1.60 0.31
Age first use (mean, sd) 14.59 4.75 14.20 4.71 14.86 4.77 0.97 .94, 1.01 0.17
Number of days abstinent prior to last use
0–30 246 64% 96 59% 151 68% 1.00
31–60 27 7% 10 6% 16 7% 1.00 .49, 2.07 0.99
61–90 24 6% 10 6% 16 7% 1.02 .51, 2.06 0.96
91+ 86 22% 46 29% 38 17% 1.80 1.26, 2.57 0.001
Treatment completion status
Complete 287 75% 124 77% 166 75% 1.00
Incomplete 96 25% 38 23% 55 25% 0.92 .64, 1.31 0.63
Length of stay (mean, sd) 5.11 2.44 5.35 2.46 4.94 2.42 1.04 .99, 1.10 0.10
Discharge destination
Non-treatment 313 82% 133 82% 179 81% 1.00
Treatment center/Medical care 70 18% 29 18% 42 19% 0.92 .62, 1.34 0.65
Referred to treatment 138 36% 58 36% 80 36% 0.96 .70, 1.32 0.80
Entered treatment (of those referred to treatment) 80 58% 34 59% 46 58% 0.94 .55, 1.59 0.81