Table 4. Interaction of current cigarette smoking and NAT2 acetylator phenotype on diminished ovarian reserve (DOR).

	All womena				Women without PCOSb
	Rapid/Intermediate		Slow		Rapid/Intermediate		Slow
	N	OR (95% CI)	N	OR (95% CI)	N	OR (95% CI)	N	OR (95% CI)
Nonsmoker	38	1.00	25	0.42(0.05–3.44)	26	1.00	16	0.35(0.02–5.14)
Passive smoker	39	1.16(0.30–4.50)	24	2.42(0.37–15.97)	25	1.43(0.31–6.66)	9	1.92(0.11–33.78)
Active smoker	18	1.25(0.16–9.54)	11	1.59(0.26–9.70)	13	1.71(0.17–17.12)	3	2.50(0.15–42.6)

^a Adjusted for age, race, and polycystic ovary syndrome; p-value for interaction = 0.67

^b Adjusted for age and race; p-value for interaction = 0.69