From: Differential item functioning (DIF) of SF-12 and Q-LES-Q-SF items among french substance users
Age | Education level | Sex | Type of substance dependence | |||||
---|---|---|---|---|---|---|---|---|
MS total DIF | P | MS total DIF | P | MS total DIF | P | MS total DIF | P | |
SF-12 Physical Health domain | ||||||||
PH1. General health | 0.749 | 0.357 | 0.180 | 0.649 | 0.034 | 0.845 | 2.359 | 0.099 |
PH2. Moderate activities | 1.312 | 0.165 | 0.004 | 0.939 | 0.841 | 0.270 | 0.098 | 0.703 |
PH3. Climbing stairs | 1.249 | 0.193 | 0.015 | 0.887 | 0.310 | 0.503 | 0.664 | 0.334 |
PH4. Accomplished less (physical) | 0.221 | 0.596 | 1.812 | 0.126 | 0.777 | 0.320 | 0.294 | 0.540 |
PH5. Limited in work | 0.007 | 0.910 | 0.130 | 0.623 | 0.502 | 0.317 | 0.171 | 0.566 |
PH6. Pain | 0.532 | 0.407 | 0.006 | 0.928 | 0.052 | 0.796 | 1.299 | 0.196 |
SF-12 Mental Health domain | ||||||||
MH1: Accomplished less (emotional) | 0.136 | 0.635 | 0.473 | 0.394 | 7.147 | 0.001a | 0.050 | 0.784 |
MH2: Worked less carefully | 2.867 | 0.042a | 0.910 | 0.250 | 0.765 | 0.299 | 0.193 | 0.602 |
MH3: Felt calm | 0.484 | 0.466 | 0.105 | 0.737 | 0.001 | 0.981 | 0.179 | 0.651 |
MH4: Felt downhearted | 3.113 | 0.043a | 0.006 | 0.923 | 0.066 | 0.766 | 2.534 | 0.064 |
MH5: Had energy | 0.442 | 0.560 | 0.016 | 0.911 | 4.036 | 0.054 | 2.116 | 0.197 |
MH6: Social activities | 3.002 | 0.079 | 0.053 | 0.813 | 0.354 | 0.539 | 0.007 | 0.933 |