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. Author manuscript; available in PMC: 2017 Aug 1.
Published in final edited form as: Drug Alcohol Depend. 2016 Jun 6;165:132–142. doi: 10.1016/j.drugalcdep.2016.05.025

Table 5.

Odds ratios with 95% Confidence Interval [CI] of latent class membership by covariate and study.

Panel A. Gender (1=Female, 0=Male)
Study Early Intermittent Late Intermittent Relapse Cessation Failure
Comparison to Early 1 0.90 [0.47, 1.71] 1.07 [0.56, 2.06] 1.15 [0.54, 2.43] 1.76 [0.98, 3.15]
Quitter Class 2 2.11 [1.25, 3.57]* 5.88 [2.38, 14.51]* 1.33 [0.73, 2.40] 1.78 [1.05, 3.00]*
3 1.55 [1.00, 2.42]* 2.66 [1.65, 4.28]* 1.61 [0.87, 30.00] 2.32 [1.47, 3.65]*
Pooled 1.46 [1.11, 1.93]* 2.13 [1.41, 3.22]* 1.54 [1.10, 2.17]* 1.80 [1.36, 2.39]*
Comparison to Cessation 1 2.79 [1.08, 7.22]* 0.84 [0.46, 1.55] 0.63 [0.32, 1.22]
Failure Class 2 1.19 [0.65, 2.18] 3.31 [1.27, 8.59]* 0.75 [0.38, 1.46]
3 0.67 [0.40, 1.13] 1.15 [0.66, 1.99] 0.70 [0.35, 1.40]
Pooled 0.81 [0.59, 1.12] 1.19 [0.76, 1.85] 0.86 [0.59, 1.25]
Comparison to Relapse 1 0.78 [0.34, 1.83] 0.94 [0.39, 2.23]
Class 2 1.59 [0.82, 3.10] 4.44 [1.64, 12.01]*
3 0.96 [0.49, 1.90] 1.65 [0.81, 3.36]
Pooled 0.95 [0.65, 1.38] 1.38 [0.85, 2.26]
Comparison to Late 1 0.84 [0.39, 1.77]
Intermittent Smoker Class 2 0.36 [0.14, 0.93]*
3 0.58 [0.33, 1.02]
Pooled 0.69 [0.44, 1.07]
Panel B. Minority (1=Minority, 0=White)
Study Early Intermittent Late Intermittent Relapse Cessation Failure
Comparison to Early 1 0.09 [0.00, 2.02] 1.96 [0.68, 5.65] 0.63 [0.14, 2.85] 1.02 [0.35, 3.02]
Quitter Class 2 2.13 [0.98, 4.62] 4.21 [1.63, 10.89]* 1.77 [0.73, 4.27] 2.42 [1.16, 5.07]*
3 2.64 [1.44, 4.87]* 1.09 [0.47, 2.53] 0.84 [0.26, 2.69] 1.39 [0.65, 2.95]
Pooled 1.55 [1.01, 2.37]* 2.33 [1.34, 4.06]* 1.01 [0.56, 1.84] 1.40 [0.88, 2.23]
Comparison to Cessation 1 1.98 [0.72, 5.42] 1.14 [0.50, 2.59] 0.83 [0.32, 2.16]
Failure Class 2 0.88 [0.39, 2.00] 1.74 [0.65, 4.67] 0.73 [0.29, 1.87]
3 1.91 [0.88, 4.15] 0.78 [0.30, 2.07] 0.61 [0.17, 2.22]
Pooled 1.10 [0.67, 1.81] 1.66 [0.90, 3.06] 0.72 [0.37, 1.39]
Comparison to Relapse 1 0.14 [0.00, 4.19] 3.11 [0.61, 15.91]
Class 2 1.20 [0.46, 3.12] 2.38 [0.79, 7.22]
3 3.15 [0.97, 10.25] 1.29 [0.34, 4.87]
Pooled 1.53 [0.82, 2.86] 2.31 [1.12, 4.78]*
Comparison to Late 1 0.05 [0.00, 1.08]
Intermittent Smoker Class 2 0.50 [0.18, 1.38]
3 2.43 [0.99, 5.99]
Pooled 0.66 [0.37, 1.19]
Panel C. Baseline cigarettes/day
Study Early Intermittent Late Intermittent Relapse Cessation Failure
Comparison to Early 1 1.26 [0.85, 1.86] 0.97 [0.63, 1.48] 1.43 [0.96, 2.13] 1.66 [1.19, 2.30]*
Quitter Class 2 2.04 [1.42, 2.93]* 1.23 [0.68, 2.21] 1.67 [1.11, 2.50]* 1.39 [0.95, 2.03]
3 1.03 [0.78, 1.36] 0.85 [0.61, 1.18] 1.14 [0.78, 1.67] 1.16 [0.89, 1.51]
Pooled 1.23 [1.05, 1.44]* 1.06 [0.84, 1.35] 1.39 [1.16, 1.66]* 1.32 [1.13, 1.53]*
Comparison to Cessation 1 0.60 [0.33, 1.09] 0.68 [0.46, 1.01] 0.82 [0.54, 1.23]
Failure Class 2 1.47 [0.99, 2.18] 0.89 [0.48, 1.63] 1.20 [0.77, 1.87]
3 0.89 [0.67, 1.17] 0.74 [0.52, 1.03] 0.98 [0.66, 1.45]
Pooled 0.94 [0.80, 1.10] 0.81 [0.63, 1.03] 1.05 [0.88, 1.27]
Comparison to Relapse 1 0.88 [0.57, 1.35] 0.68 [0.42, 1.10]
Class 2 1.22 [0.81, 1.85] 0.74 [0.39, 1.38]
3 0.90 [0.61, 1.35] 0.75 [0.48, 1.17]
Pooled 0.89 [0.74, 1.07] 0.77 [0.59, 1.00]
Comparison to Late 1 1.30 [0.82, 2.06]
Intermittent Smoker Class 2 1.66 [0.91, 3.00]
3 1.21 [0.85, 1.72]
Pooled 1.16 [0.91, 1.48]
Panel D. Baseline FTND
Covariate Study Early Intermittent Late Intermittent Relapse Cessation Failure
Comparison to Early 1 1.04 [0.57, 1.90] 3.89 [1.95, 7.78]* 0.76 [0.39, 1.46] 1.49 [0.87, 2.54]
Quitter Class 2 1.07 [0.41, 2.82] 2.73 [0.58, 12.73] 1.77 [0.59, 5.27] 2.29 [0.85, 6.18]
3 0.71 [0.49, 1.04] 1.02 [0.69, 1.53] 0.58 [0.35, 0.98]* 1.25 [0.86, 1.82]
Pooled 1.00 [0.86, 1.16] 1.45 [1.17, 1.81]* 1.02 [0.85, 1.23] 1.47 [1.26, 1.70]*
Comparison to Cessation 1 2.54 [0.49, 13.05] 2.13 [0.68, 6.65] 1.65 [0.49, 5.57]
Failure Class 2 0.47 [0.15, 1.47] 1.19 [0.23, 6.25] 0.77 [0.22, 2.75]
3 0.57 [0.37, 0.88]* 0.82 [0.52, 1.29] 0.47 [0.26, 0.83]*
Pooled 0.68 [0.58, 0.81]* 0.99 [0.79, 1.25] 0.70 [0.57, 0.85]*
Comparison to Relapse 1 1.38 [0.66, 2.88] 5.15 [2.23, 11.89]*
Class 2 0.61 [0.18, 2.06] 1.54 [0.27, 8.74]
3 1.22 [0.69, 2.16] 1.76 [0.97, 3.18]
Pooled 0.98 [0.80, 1.19] 1.42 [1.10, 1.84]*
Comparison to Late 1 0.27 [0.12, 0.58]*
Intermittent Smoker Class 2 0.39 [0.08, 2.02]
3 0.70 [0.44, 1.10]
Pooled 0.69 [0.55, 0.87]*
Panel E. Number of past quit attempts
Study Early Intermittent Late Intermittent Relapse Cessation Failure
Comparison to Early 1 0.51 [0.18, 1.43] 0.74 [0.30, 1.82] 2.23 [1.04, 4.78]* 1.00 [0.46, 2.16]
Quitter Class 2 1.20 [0.82, 1.74] 0.74 [0.35, 1.53] 0.96 [0.59, 1.56] 0.55 [0.30, 0.99]*
3 Did not converge Did not converge Did not converge Did not converge
Pooled 1.06 [0.93, 1.20] 1.08 [0.93, 1.26] 1.10 [0.96, 1.26] 0.64 [0.48, 0.84]*
Comparison to Cessation 1 0.62 [0.29, 1.30] 0.46 [0.24, 0.85]* 0.80 [0.48, 1.35]
Failure Class 2 2.19 [1.18, 4.09]* 1.35 [0.55, 3.29] 1.76 [0.88, 3.53]
3 Did not converge Did not converge Did not converge
Pooled 1.66 [1.24, 2.20]* 1.70 [1.26, 2.29]* 1.72 [1.28, 2.31]*
Comparison to Relapse 1 0.23 [0.07, 0.71]* 0.33 [0.12, 0.92]*
Class 2 1.25 [0.74, 2.09] 0.77 [0.34, 1.74]
3 Did not converge Did not converge
Pooled 0.96 [0.83, 1.11] 0.99 [0.83, 1.17]
Comparison to Late 1 0.69 [0.21, 2.28]
Intermittent Smoker Class 2 1.62 [0.77, 3.43]
3 Did not converge
Pooled 0.98 [0.83, 1.15]
Panel F. Baseline EMA craving
Study Early Intermittent Late Intermittent Relapse Cessation Failure
Comparison to Early 1 0.72 [0.50, 1.01] 0.77 [0.55, 1.10] 1.15 [0.78, 1.69] 0.89 [0.65, 1.20]
Quitter Class 2 0.82 [0.55, 1.21] 1.58 [0.82, 3.06] 0.85 [0.55, 1.32] 1.10 [0.73, 1.65]
3 1.95 [1.53, 2.49]* 2.32 [1.79, 3.00]* 1.90 [1.37, 2.64]* 2.31 [1.81, 2.96]*
Pooled 1.18 [1.02, 1.36]* 1.45 [1.18, 1.79]* 1.18 [0.99, 1.41] 1.52 [1.31, 1.76]*
Comparison to Cessation 1 1.93 [0.96, 3.89] 1.34 [0.84, 2.14] 1.04 [0.63, 1.70]
Failure Class 2 0.74 [0.47, 1.18] 1.44 [0.71, 2.91] 0.77 [0.46, 1.29]
3 0.84 [0.64, 1.12] 1.00 [0.75, 1.34] 0.82 [0.57, 1.18]
Pooled 0.78 [0.66, 0.91]* 0.96 [0.77, 1.20] 0.78 [0.64, 0.95]*
Comparison to Relapse 1 0.62 [0.40, 0.98]* 0.68 [0.43, 1.07]
Class 2 0.96 [0.59, 1.58] 1.86 [0.89, 3.88]
3 1.03 [0.72, 1.47] 1.22 [0.84, 1.77]
Pooled 1.00 [0.82, 1.21] 1.23 [0.96, 1.59]
Comparison to Late 1 0.92 [0.61, 1.39]
Intermittent Smoker Class 2 0.52 [0.26, 1.04]
3 0.84 [0.63, 1.13]
Pooled 0.81 [0.65, 1.01]
*

p < 0.05