Table II.
Multilevel model of longitudinal change in past 90 day outcomes (log-transformed) (N=559)
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Column | 1 | 2 | 3 | 4 | 5 | |||||
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Variable | Days of crack use | Days of alcohol use | Number of sex partners | Unprotected vaginal sex times | Days in self-help | |||||
Estimate | S.E. | Estimate | S.E. | Estimate | S.E. | Estimate | S.E. | Estimate | S.E. | |
Fixed Effects: | ||||||||||
Intercept | 2.85† | .12 | 3.09† | .12 | 2.16† | .07 | 1.30† | .11 | .36† | .09 |
Time | −.98† | .07 | −.91† | .07 | −.71† | .05 | −.14 | .08 | .47† | .06 |
Group (ref. prof. only) | −.19 | .14 | −.18 | .14 | .10 | .08 | .17 | .12 | .08 | .10 |
Group* Time | .11 | .08 | .12 | .08 | −.04 | .05 | −.06 | .08 | −.09 | .06 |
Age | .10† | .01 | .01 | .01 | −.01** | .00 | .01 | .01 | .00 | .01 |
Age* Time | −.03† | .00 | −.01 | .00 | .01* | .00 | −.02† | .01 | .00 | .00 |
HIV status (ref.neg) | .18 | .19 | −.39** | .18 | .01 | .10 | −.30 | .16 | .12 | .14 |
HIVstatus* Time | −.25* | .10 | −.05 | .10 | −.14* | .07 | −.25* | .11 | −.02 | .08 |
Homeless (ref. homeless) | −.28 | .14 | .11 | .14 | −.21** | .08 | −.04 | .13 | −.05 | .11 |
Homeless* Time | .12 | .08 | .06 | .08 | .08 | .05 | .14 | .09 | −.20** | .06 |
Random Variance: | ||||||||||
Intercept | 1.49† | .13 | 1.24† | .11 | .28† | .03 | .65† | .08 | .68† | .06 |
Residual | 1.51† | .07 | 1.51† | .07 | .65† | .03 | 1.74† | .08 | .98† | .04 |
Multilevel model of longitudinal change in dichotomous past 90 day outcomes (N=559)
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Column | 1 | 2 | 3 | |||
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Variable | HIV Testinga | HIV Careb | Regular Source of Medical Care | |||
OR | S.E. | OR | S.E. | OR | S.E | |
Fixed Effects: | ||||||
Intercept | .78 | .14 | 1.25 | .81 | .47** | .13 |
Time | 1.49* | .25 | 2.61 | 1.86 | 3.37† | .85 |
Group (ref. prof. only) | .89 | .19 | 2.57 | 1.77 | 1.42 | .47 |
Group* time | 1.10 | .21 | .83 | .52 | 1.07 | .27 |
Age | .99 | .01 | 1.01 | .05 | 1.00 | .02 |
Age* Time | .97** | .01 | 1.04 | .05 | .99 | .02 |
HIV status (ref.neg) | 23.02† | 13.34 | ||||
HIV status* Time | 1.91 | .99 | ||||
Homeless (ref. homeless) | .61* | .14 | 5.79* | 4.19 | 5.88† | 2.09 |
Homeless* Time | 1.14 | .22 | .95 | .62 | .57* | .15 |
Random Variance: | ||||||
Intercept | .95 | .18 | 1.54 | .56 | 2.43* | .27 |
Linear slope (Time) | .75 | .23 | 1.12 | .74 | 1.16 | .32 |
Note. SE=standard error;
All parameter entries are restricted maximum likelihood estimates fitted using Stata/SE12.1 xtmixed
p=<.05;
p<.01;
p<.001
All parameter entries are restricted maximum likelihood estimates fitted using Stata/SE12.1 xtmelogit
p=<.05;
p<.01;
p<.001;
Only HIV negative participants at baseline were included in this analysis.
Only HIV positive participants at baseline were included in this analysis.