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. Author manuscript; available in PMC: 2016 Apr 1.
Published in final edited form as: Pain. 2015 Apr;156(4):731–739. doi: 10.1097/01.j.pain.0000461252.75089.bf

Table 3.

Multivariable predictors of new onset DNP in the mixed effects logistic regression. Covariate effects are adjusted for other variables in the model. No covariate-time interactions were significant. N=493 subjects, 2306 visits.

Covariate Effect
Covariates1 Covariate Levels OR 95 % CI p
Time* NA 0.992 (0.88, 1.12) 1.000

Age Per year 1.037 (1.00, 1.08) 0.064

Gender Male vs Female 0.47 (0.22, 0.980) 0.150

Plasma VL at entry Undetectable Ref 2 -- 0.038
Detectable 1.54 (1.007, 2.35) --

CART Use at study entry Never Used Ref 2 -- 0.0072
Current 2.44 (1.026, 5.80) --
Past Use 4.59 (1.51, 13.97) --

Lifetime history of Opioid Abuse/ Dependence No Ref 2 -- --
Yes 2.31 (1.078, 4.95) 0.014

Time-updated Severity of depressive symptomatology BDI-II 0-13 Ref 2 -- 0.0017
BDI-II 14-19 1.66 (0.922, 3.00) --
BDI-II 20-28 1.89 (1.026, 3.49) --
BDI-II 29-63 2.99 (1.41, 6.31) --
1

All covariates entered into this model were significant (α = 0.15) in the univariable analysis

2

Odds ratios calculated by comparison to a reference group comprising individuals on CART with undetectable plasma VL at study entry and all follow-up visits (i.e., optimally treated), without depressed mood at study entry and having no history of substance abuse or dependence.

ref: reference level (OR=1)

BDI-II, Beck Depression Inventory, Second Edition.