Table 4 Logistic regression analysis: Adjusted odds ratio (OR) and 95 % confidence intervals (CI) for potential risk factors for lead poisoning (Blood lead concentration >= 100 μg/L) among children 1–3 year old

Father's occupation (ref. Non-manual)

   Manual

4.74 (1.82 – 12.31)

Season (ref. Winter)

   Spring

1.07 (0.22 – 5.22)

   Summer

4.39 (1.15 – 16.81)

   Fall

2.88 (0.94 – 8.84)

Age of building (ref. <= 20 years)

   > 20 years

2.01 (0.88 – 4.60)

Traffic jam in area (ref. Rarely)

   Often/Always

4.59 (1.61 – 13.06)

Use hot tap water for cooking (ref. No)

   Yes

3.96 (1.17 – 13.44)

Ever applied kohl on child (ref. No)

   Yes

2.40 (0.92 – 6.28)