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Table 4 Reliability and consistency coefficients of scale of measurement of DUQOL

From: Validation and psychometric properties of the drug users’ quality of life scale in Iranian population

No Items Correlation coefficient Alpha-Cronbach
R P-value
1 Being Useful For society and help to people 0.575 0.001** 0.84
2 Accessible Community Resources 0.144 0.017** 0.85
3 Drugs 0.356 0.001** 0.84
4 Drug Treatment 0.345 0.001** 0.85
5 Education and training 0.484 0.001** 0.85
6 Family 0.578 0.001** 0.84
7 Feeling Good about Yourself 0.65 0.001** 0.84
8 Independence and Free Choice 0.433 0.001** 0.85
9 Friends 0.377 0.001** 0.85
10 Caring for Harm Reduction 0.448 0.001** 0.85
11 Physical and mental Health 0.602 0.001** 0.84
12 Accessible Health Care services 0.416 0.001** 0.85
13 Housing 0.608 0.001** 0.84
14 How others treat you 0.617 0.001** 0.84
15 Leisure Activities 0.528 0.001** 0.84
16 Income/Money 0.507 0.001** 0.84
17 Neighborhood Safety 0.619 0.001** 0.84
18 Partner(s) 0.591 0.001** 0.85
19 Feeling towards the future 0.402 0.001** 0.84
20 Sex 0.435 0.001** 0.85
21 Spirituality 0.63 0.001** 0.85
22 Transportation 0.423 0.001** 0.84
  DUQOL    0.85