Manual for the Benzodiazepine Dependence Questionnaire (BDEPQ)

PROPERTIES OF BDEPQ TOTAL SCORES 33
Table 8: Properties of BDEPQ total and sub scale scores on both waves
n mean sd sem alpha min 25%ile 50%ile 75%ile max
Wave one
Total 189 22.1 16.0 4.47 0.922 0 11 19 33 72
General dependence 225 8.1 7.0 2.74 0.847 0 3 7 11 38
Pleasant e ects 214 5.9 4.8 1.90 0.844 0 2 5 10 18
Perceived need 241 7.7 6.7 2.44 0.867 0 3 6 11.25 30
Wave two
Total 170 18.5 14.3 4.17 0.915 0 6 15 27 65
General dependence 202 6.7 5.8 2.61 0.798 0 2 6 9 32
Pleasant e ects 189 4.6 4.4 1.76 0.840 0 0 4 8 17
Perceived need 201 7.4 6.6 2.38 0.870 0 2 5 11 28
Notes: n = number of subjects, sd = standard deviation, sem = standard error of
measurement, alpha = Cronbach's coe cient alpha, min = minimum score, max =
maximum score.