Table 2.
Descriptive statistics, internal consistency estimates, and factor loadings for health-related characteristics of opioid-dependent patients (n = 344)
| Mean (SD) | Alpha | Loading | |
|---|---|---|---|
| Health-related quality of life | |||
| Physical Health (SF-36 T scores) | |||
| Physical functioning | 50.3 (9.0) | 0.91 | 0.73 |
| General health perceptions | 44.7 (9.7) | 0.75 | 0.71 |
| Bodily pain | 47.1 (12.0) | 0.86 | 0.82 |
| Role limitations due to physical health problems | 44.6 (12.3) | 0.90 | 0.73 |
| Mental Health (SF-36 T scores) | |||
| Emotional well-being | 38.4 (12.1) | 0.81 | 0.80 |
| Social functioning | 38.7 (12.2) | 0.76 | 0.88 |
| Energy/fatigue | 44.1 (10.5) | 0.81 | 0.72 |
| Role limitations due to emotional problems | 39.5 (14.2) | 0.89 | 0.74 |
| Withdrawal signs and symptoms | |||
| ARSW “Parcel 1”a | 3.4 (2.6) | – | .92 |
| ARSW “Parcel 2”a | 3.5 (2.7) | – | .90 |
| ARSW “Parcel 3”a | 3.2 (2.6) | – | .93 |
| ARSW “Parcel 4”a | 3.3 (2.7) | – | .95 |
| COWS “Parcel 1”b | 0.51 (0.47) | – | .61 |
| COWS “Parcel 2”b | 0.68 (0.66) | – | .76 |
| COWS “Parcel 3”b | 0.72 (0.94) | – | .60 |
| COWS “Parcel 4”b | 0.56 (0.54) | – | .80 |
| Functioning | |||
| ASI family/social composite score | 0.14 (0.18) | .63 | .55 |
| ASI psychiatric composite score | 0.18 (0.19) | .80 | .81 |
| Physiologic factors | |||
| Count of abnormal findings on physical exam | 1.2 (1.3) | – | – |
| Count of positive findings from medical history | 2.1 (2.2) | – | – |
| Body mass index | 25.2 (4.8) | – | – |
ARSW, adjective rating scale of withdrawal; ASI, addiction severity index; COWS, clinical opiate withdrawal scale; HRQOL, health-related quality of life; SF-36, short-form 36
aThe 16 items of the ARSW were randomly combined into “parcels” to obtain mean indicators
bThe 11 items of the COWS were randomly combined into “parcels” to obtain mean indicators