From: Disentangling psychopathology, substance use and dependence: a factor analysis
 | Sample A (N = 232) | Sample B (N = 280) | |||||
---|---|---|---|---|---|---|---|
Inter-factors correlation = .45 | Inter-factors correlation = .43 | ||||||
Item | Description | Factor 1 (CMD) | Factor 2 (SUD) | Communality | Factor 1 (CMD) | Factor 2 (SUD) | Communality |
Alcohol QF | Alcohol quantity x frequency of use (last week) | – | – | .03 | – | – | .02 |
Heroin QF | Heroin quantity x frequency of use (last week) | Â | .53 | .27 | Â | .56 | .28 |
Crack QF | Crack quantity x frequency of use (last week) | Â | .36 | .11 | Â | .39 | .14 |
Cannabis QF | Cannabis quantity x frequency of use (last week) | – | – | .03 | – | – | .02 |
TOP4a | Self-rated psychological wellbeing | -.50 | Â | .25 | -.54 | Â | .27 |
PHQ1 | Loss of interest and pleasure | .53 | Â | .33 | .59 | Â | .37 |
PHQ2 | Depressed mood | .80 | Â | .63 | .82 | Â | .63 |
PHQ3 | Disrupted sleeping patterns | .54 | Â | .28 | .58 | Â | .31 |
PHQ4 | Lethargy | .58 | Â | .34 | .57 | Â | .31 |
PHQ5 | Disruptions in appetite | .52 | Â | .32 | .54 | Â | .32 |
PHQ6 | Depressive rumination | .57 | Â | .58 | .61 | Â | .60 |
PHQ7 | Disrupted concentration | .61 | Â | .33 | .67 | Â | .39 |
PHQ8 | Psychomotor deficits or agitation | .55 | Â | .37 | .59 | Â | .40 |
PHQ9 | Suicidal ideation | .61 | Â | .45 | .62 | Â | .48 |
GAD1 | Feelings of anxiety and nervousness | .79 | Â | .58 | .81 | Â | .62 |
GAD2 | Impaired control over worry | .93 | Â | .74 | .88 | Â | .70 |
GAD3 | Generalised worry about different things | .83 | Â | .62 | .82 | Â | .62 |
GAD4 | Trouble relaxing | .84 | Â | .62 | .86 | Â | .66 |
GAD5 | Restlessness | .68 | Â | .50 | .69 | Â | .51 |
GAD6 | Irritability | .55 | Â | .37 | .57 | Â | .40 |
GAD7 | Fear | .73 | Â | .56 | .63 | Â | .46 |
SDS1 | Impaired control over substance use | Â | .90 | .76 | Â | .88 | .74 |
SDS2 | Worry about missing a dose of substance use | Â | .78 | .58 | Â | .76 | .55 |
SDS3 | Worry about substance use | Â | .87 | .78 | Â | .87 | .79 |
SDS4 | Wish to stop substance use | Â | .83 | .62 | Â | .84 | .64 |
SDS5 | Difficulty in abstaining from substance use | Â | .61 | .41 | Â | .62 | .41 |