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. 2016 Aug 1;3(4):252–257. doi: 10.1089/lgbt.2015.0123

Table 2.

Longitudinal Models Examining Predictors of PrEP-Relevant Factors

  PrEP familiarity Willingness to take PrEP
  B AOR 95% CI B AOR 95% CI
Between-participant factors (level 2)
 Age 0.03 1.03 0.99, 1.06 −0.01 0.99 0.97, 1.02
 White race (ref = non-White) −0.41 0.66 0.31, 1.44 −0.06 0.94 0.50, 1.76
 Gay (ref = bisexual) 0.82 2.28 0.80, 6.45 0.93 2.53* 1.11, 5.74
 College degree (ref = no) −0.26 0.77 0.34, 1.75 −0.92 0.40** 0.21, 0.77
 Month of enrollmenta 0.10 1.10** 1.02, 1.19 0.04 1.04 0.98, 1.10
Within-participant factors (level 1)
 Partnered (ref = single) −0.36 0.70 0.30, 1.64 −0.55 0.58 0.29, 1.17
 Club drug use (ref = no) 0.89 2.44* 1.12, 5.30 0.11 1.12 0.59, 2.12
 SC symptomology (ref = no) −0.40 0.67 0.33, 1.37 0.62 1.86* 1.04, 3.32
 FDA-approved PrEP (ref = no) 0.32 1.37 0.47, 3.98 −0.52 0.59 0.25, 1.42
 Any CAS reported (ref = no) 0.27 1.31 0.66, 2.61 0.79 2.21** 1.25, 3.91
 12-month assessment (ref = baseline)b 0.48 1.61 0.78, 3.35 0.35 1.42 0.73, 2.77
  Likelihood of CAS on PrEP Temptation for CAS on PrEP
  B AOR 95% CI B AOR 95% CI
Between-participant factors (level 2)
 Age −0.02 0.98 0.95, 1.01 −0.03 0.97 0.95, 1.00
 Gay (ref = bisexual) 0.39 1.47 0.57, 3.84 0.39 1.47 0.59, 3.64
 White race (ref = non-White) 1.04 2.82** 1.33, 5.98 0.42 1.53 0.75, 3.09
 College degree (ref = no) 0.21 1.23 0.57, 2.69 0.73 2.08 0.99, 4.38
 Month of enrollmenta 0.03 1.03 0.96, 1.10 0.03 1.03 0.97, 1.10
Within-participant factors (level 1)
 Partnered (ref = single) −0.16 0.85 0.39, 1.83 0.43 1.54 0.71, 3.32
 Club drug use (ref = no) 0.10 1.11 0.54, 2.29 0.04 1.04 0.50, 2.14
 SC symptomology (ref = no) 0.30 1.35 0.69, 2.63 0.84 2.32** 1.21, 4.44
 FDA-approved PrEP (ref = no) −0.49 0.61 0.22, 1.69 0.82 2.28 0.87, 5.95
 Any CAS reported (ref = no) 1.71 5.51*** 2.65, 11.46 1.27 3.57*** 1.91, 6.66
 12-month assessment (ref = baseline)b 0.65 1.91 0.87, 4.18 −0.66 0.52 0.25, 1.07
a

Between-person time was coded as the month of the participant's enrollment (0 through 27), which was mean centered and time invariant (i.e., constant for the same participant over time).

b

Within-participant time was dichotomously coded as the month of the assessment (BL = 0, 12M = 1) and was time-varying (i.e., differed for the same participant over time). Age and month of enrollment were both mean centered.

*

P ≤ 0.05; **P ≤ 0.01; ***P ≤ 0.001.

FDA, Food and Drug Administration; SC, sexual compulsivity.