Table 3.
Generalized Estimating Equation Analysis to test if the participant characteristics were associated with under-reporting given the positive hair sample and over-reporting given the negative hair sample
| Predictor | Under-reporting Given Positive Hair Sample | Over-reporting Given Negative Hair Sample | ||
|---|---|---|---|---|
| Pvalue | Odds-Ratio of Under-reporting | Pvalue | Odds-Ratio of Over-reporting | |
| Cannabis | ||||
| Hair Source [Ref = Head] |
0.8622 | Body=0.98 | 0.8731 | Body=0.98 |
| Drug of Choice [Ref = Cannabis] |
<.0001 | Cocaine=3.40, OtherDrugs=4.55, PrescribedOpioids=3.11, StreetOpioids=5.30 |
0.0029 | Cocaine=0.55, OtherDrugs=0.38, PrescribedOpioids=0.27, StreetOpioids=0.25 |
| Site [Ref = S6] | <.0001 | S1=0.49, S2=1.38, S3=0.33, S4=3.31, S5=1.10 | 0.0438 | S1=1.19, S2=1.22, S3=1.78, S4=0.67, S5=1.08 |
| AUDIT-C Score [Ref = ≥ 4] |
0.8224 | <4=1.02 | 0.0458 | <4=0.81 |
| DAST-10 Score[Ref = ≥ 8] |
0.9703 | <8=1.00 | 0.0536 | <8=0.81 |
| Visit [Ref = 3M] | 0.1399 | 12M=1.25, 6M=0.91 | 0.7294 | 12M=0.87, 6M=0.90 |
| Treatment [Ref = BIB] |
0.2671 | MSO=0.79, SAR=0.72 | 0.5648 | MSO=1.24, SAR=1.23 |
| Gender [Ref = Male] |
0.0085 | Female=1.33 | 0.9126 | Female=1.01 |
| Race [Ref = White] | 0.3277 | Black=0.79, Other=0.65 | 0.8673 | Black=1.11, Other=1.14 |
| Ethnicity [Ref = Hispanic] |
0.4810 | NoAnswer=0.32, NotHispanic=1.04 | 0.1251 | NotHispanic=1.45 |
| Age [Ref = ≤ 25] | 0.0076 | 25-<35=0.78, 35-<45=1.18, 45-<55=2.02, 55+=1.51 |
0.3281 | 25-<35=0.99, 35-<45=1.11, 45-<55=0.80, 55+=0.49 |
| Cocaine | ||||
| Hair Source [Ref = Head] |
0.6358 | Body=0.96 | 0.0065 | Body=0.44 |
| Drug of Choice [Ref = Cocaine] |
<.0001 | Cannabis=4.14, OtherDrugs=5.01, PrescribedOpioids=6.90, StreetOpioids=2.57 |
0.1387 | Cannabis=0.68, OtherDrugs=1.22, PrescribedOpioids=0.13, StreetOpioids=0.87 |
| Site [Ref = S6] | <.0001 | S1=0.33, S2=0.73, S3=0.95, S4=2.28, S5=1.20 | 0.3653 | S1=1.16, S2=0.82, S3=1.80, S4=1.54, S5=0.94 |
| AUDIT-C Score [Ref = ≥ 4] |
0.0159 | <4=1.20 | <.0001 | <4=0.35 |
| DAST-10 Score[Ref = ≥ 8] |
0.0501 | <8=1.18 | 0.0357 | <8=0.61 |
| Visit [Ref = 3M] | 0.0009 | 12M=1.56, 6M=1.02 | 0.6535 | 12M=0.70, 6M=0.83 |
| Treatment [Ref = BIB] |
0.7013 | MSO=1.04, SAR=0.90 | 0.5285 | MSO=0.67, SAR=0.64 |
| Gender [Ref = Male] |
0.2090 | Female=0.90 | 0.4301 | Female=0.86 |
| Race [Ref = White] | 0.6248 | Black=0.81, Other=0.91 | 0.7093 | Black=1.59, Other=1.12 |
| Ethnicity [Ref = Hispanic] |
0.5342 | NoAnswer=7.96, NotHispanic=1.05 | Did Not Converge (Excluded from the Model) | |
| Age [Ref = ≤ 25] | 0.2174 | 25-<35=0.96, 35-<45=0.73, 45-<55=0.67,55+=0.55 | Did Not Converge (Excluded from the Model) | |
| Prescribed Opioids | ||||
| Hair Source [Ref = Head] |
0.6352 | Body=0.94 | 0.6528 | Body=1.06 |
| Drug of Choice [Ref = Presc. Opioids] |
0.0057 | Cannabis=1.79, Cocaine=2.96,OtherDrugs=1.39, StreetOpioids=3.30 | 0.0377 | Cannabis=0.48, Cocaine=0.46, OtherDrugs=0.24, StreetOpioids=1.10 |
| Site [Ref = S6] | 0.0087 | S1=0.48, S2=1.17, S3=0.43, S4=3.43, S5=1.05 | 0.0001 | S1=1.47, S2=1.20, S3=1.53, S4=0.28, S5=1.76 |
| AUDIT-C Score [Ref = ≥ 4] |
0.5960 | <4=1.05 | <.0001 | <4=0.49 |
| DAST-10 Score[Ref = ≥ 8] |
0.0277 | <8=1.30 | 0.1233 | <8=0.76 |
| Visit [Ref = 3M] | 0.1658 | 12M=0.80, 6M=0.74 | 0.1338 | 12M=0.67, 6M=0.71 |
| Treatment [Ref = BIB] |
0.2214 | MSO=0.87, SAR=0.65 | 0.9272 | MSO=0.95, SAR=0.87 |
| Gender [Ref = Male] |
0.1063 | Female=1.21 | 0.6640 | Female=1.07 |
| Race [Ref = White] | 0.0031 | Black=4.42, Other=0.98 | 0.0013 | Black=0.27, Other=0.48 |
| Ethnicity [Ref = Hispanic] |
0.7853 | NoAnswer=0.46, NotHispanic=1.08 | Did Not Converge (Excluded from the Model) | |
| Age [Ref = ≤ 25] | 0.8306 | 25-<35=1.14, 35-<45=0.88, 45-<55=0.84, 55+=0.84 |
0.0959 | 25-<35=1.06, 35-<45=0.53, 45-<55=0.69,55+=0.20 |
| Street Opioids | ||||
| Hair Source [Ref = Head] |
0.6013 | Body=0.89 | 0.7327 | Body=1.07 |
| Drug of Choice [Ref = St. Opioids] |
0.0042 | Cannabis=9.19, Cocaine=4.08, OtherDrugs=3.36, PrescribedOpioids=1.94 |
0.0255 | Cannabis=0.14, Cocaine=0.25, OtherDrugs=0.33, PrescribedOpioids=0.49 |
| Site [Ref = S6] | 0.1623 | S1=0.51, S2=1.19, S4=3.28, S5=0.64 | 0.3702 | S1=0.61, S2=1.19, S3=0.63, S4=0.87, S5=1.25 |
| AUDIT-C Score [Ref = ≥ 4] |
0.7500 | <4=0.95 | 0.2629 | <4=0.83 |
| DAST-10 Score[Ref = ≥ 8] |
0.0195 | <8=1.51 | 0.1810 | <8=0.78 |
| Visit [Ref = 3M] | 0.0344 | 12M=1.47, 6M=0.66 | 0.0245 | 12M=0.51, 6M=0.46 |
| Treatment [Ref = BIB] |
0.0325 | MSO=1.67, SAR=2.78 | 0.2288 | MSO=0.87, SAR=1.60 |
| Gender [Ref = Male] |
0.2310 | Female=0.80 | 0.4155 | Female=1.14 |
| Race [Ref = White] | 0.3010 | Black=2.03, Other=1.82 | 0.0007 | Black=0.18, Other=0.91 |
| Ethnicity [Ref = Hispanic] |
0.3004 | NoAnswer=23.32, NotHispanic=0.99 | Did Not Converge (Excluded from the Model) | |
| Age [Ref = ≤ 25] | 0.2472 | 25-<35=4.15, 35-<45=2.63, 45-<55=1.81, 55+=1.95 |
0.7423 | 25-<35=0.57, 35-<45=0.79, 45-<55=0.51, 55+=0.67 |