An Investigation of Cigarettes Smoking Behavior and Nicotine Dependence among Chinese Methamphetamine Users in Two Provinces

Table 4

Binary logistic regression of risk factors for severe nicotine dependence (FTND > 5).

Risk factors	𝑛	OR	95% CI of OR
Gender
Male	271	2.615	1.345–5.086
Female	83	1
Marriage
Unmarried^a	235	1
Married	121	1.938	1.159–3.239
Ever-use of ketamine^b
No	279	1
Yes	76	2.044	1.074–3.890
Ever-use of alcohol^b
Yes	184	1.699	1.057–2.732
No	161	1
Usual dose of MA
≤0.2 g	185	1
>0.2 g	166	1.659	1.015–2.712

aUnmarried refers to being single or ever married but divorced or separated.
bEver-use means the participant had ever used the substance but not necessarily concurrent with MA before the survey started.