Relationship between risk factors for infertility in women and lead, cadmium, and arsenic blood levels: a cross-sectional study from Taiwan

Table 5 Adjusted^a logistic regression analyses in relevant variables and blood Pb levels^b of infertile women

Variables	aOR	95 % CI	p value
Age (years old)	1.07	0.96–1.19	0.20
Occupational exposure^c
No	1
Yes	0.83	0.15–4.51	0.83
Family income ($/month)
≤3500	1
>3500	1.17	0.48–2.82	0.73
Menstruation^d
Regular	1
Irregular	1.43	0.49–4.14	0.51
Chinese herbal medicine use
No (<1/month)	1
1–3 times/month	0.90	0.32–2.52	0.84
1–6 times/week	2.82	0.98–8.09	0.05
Alcohol consumption^e
No	1
Yes	0.90	0.36–2.27	0.83
Physical activity
No	1
1–2/week	0.37	0.14–1.00	0.05
≥3/week	0.38	0.11–1.29	0.12

^aAdjusted on age, occupational exposure, family income, menstruation, Chinese herbal medicine use, alcohol consumption, physical activity
^bBlood Pb levels in the regression was by evaluated blood Pb levels ≥ Q3(75th) (21.00 μg/L) compared to the referent; the blood Pb levels ≤ Q1 (25th) (11.83 μg/L) is as the referent
^cHad worked in metal exposure places at least one month or not
^d Menstruation was dichotomized as regular and irregular. Regular: 24–35 day menstrual cycles; irregular: menstrual cycle <8 time/year or >35 days
^eAlcohol consumption was dichotomized as yes and no. Yes defined as drinking wines as usual

ISSN: 1471-2458