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. Author manuscript; available in PMC: 2018 Jul 31.
Published in final edited form as: AIDS. 2017 Jul 31;31(12):1765–1769. doi: 10.1097/QAD.0000000000001543

Table 1.

Virologic Suppression in the IC Arm Compared to the PVI Arm and the PC Arm

Panel A: Virologic Suppression in the IC Arm Compared to the PVI Arm
Unadj. Odds Ratio [95% conf. int.] Adj. Odds Ratio [95% conf. int.]
Virologic suppression at fifth visit 1.16 [0.31,4.36] 1.57 [0.25,9.92]
Virologic suppression at sixth visit 3.17 [0.80,12.59] 3.38 [0.77,14.84]
Panel B: Virologic Suppression in the IC Arm Compared to the PC Arm
Unadj. Odds Ratio [95% conf. int.] Adj. Odds Ratio [95% conf. int.]
Virologic suppression at fifth visit 1.28 [0.44,3.77] 1.44 [0.46,4.49]
Virologic suppression at sixth visit 2.88* [0.98,8.47] 3.93** [1.19,13.04]
*

p<0.10

**

p<0.05

This table reports the results of logistic regressions where the outcome variable is an indicator for virologic suppression (pVL ≤200 copies/mL) at the fifth visit (the last incentivized visit for the IC and PVI arms) or at the sixth visit (the unanticipated post-incentive visit for the IC and PVI arms). Individuals who are missing a pVL measurement are coded as not suppressed.

The sample in Panel A is only participants in the IC and PVI arms, and this panel reports the odds ratio for the IC arm compared to the PVI arm. The unadjusted odds ratio is from a regression specification in which the predictor variables are the stratifying variable (an indicator for whether or not the majority of the previous three pVL measurements were suppressed) and an indicator for the IC arm. The adjusted odds ratio is from a regression specification that adds age, gender, race, baseline pVL, and mean pVL in the 6 months prior to the study as predictor variables.

The sample in Panel B includes participants in all three arms, and this panel reports the odds ratio for the IC arm compared to the PC arm. The unadjusted odds ratio is from a regression specification in which the predictor variables are the stratifying variable (an indicator for whether or not the majority of the previous three pVL measurements were suppressed), an indicator for the PVI arm, and an indicator for the IC arm. The adjusted odds ratio is from a regression specification that adds age, gender, race, baseline pVL, and mean pVL in the 6 months prior to the study as predictor variables.