Khat (Catha edulis Forsk.) Dependence Potential and Pattern of Use in Saudi Arabia

Table 5

Modeling of Khat of dependence using stepwise logistic regression (SLR).

Variables		SE	Wald	value	Odd ratio	95.0% CI for OR
						Lower	Upper
Residence
Urban (ref.)					1
Rural	0.51	0.22	5.60	0.02	1.67	1.09	2.54
Frequency of Khat chewing
Irregularly (ref.)			16.18	0.00	1
Daily	1.57	0.61	6.66	0.01	4.80	1.46	15.78
More than once a week	1.14	0.30	14.17	0.00	3.13	1.73	5.66
Once a month	0.95	0.30	10.21	0.00	2.60	1.45	4.66
Age of starting Khat chewing	0.14	0.03	21.99	0.00	1.15	1.09	1.22
Time of Khat effect	0.14	0.07	4.05	0.04	1.15	1.00	1.32
Constant	−3.83	0.64	36.35	0.00	0.02

Modeling of Khat dependence was based on DAST-10 categorization (0 for problem and 1 for moderate level).
Hosmer and Lemeshow goodness of fit test ;  ; −2 Log likelihood ratio = 723.377.
: regression coefficient; SE: standard error of .