Table 2.

Children’s environmental tobacco smoke (ETS) exposure from caregivers and other smokers, and urinary cotinine levels, at baseline and post-intervention (after 6 months).

Variable	Baseline	Post-Intervention
Children’s urine cotinine concentration (ng/mL)
Intervention group	1.72 (1.53–1.92)	1.29 (1.09–1.50)
Control group	1.74 (1.53–1.95)	1.78 (1.55–2.01)
Statistics	Z = −0.059; p = 0.953	Z = −3.136; p = 0.002
Children’s ETS exposure from caregivers (number of cigarettes/week)
Intervention group	3.45 (3.04–3.87)	2.05 (1.52–2.59)
Control group	3.54 (3.17–3.90)	3.42 (3.04–3.79)
Statistics	Z = −0.584; p = 0.559	Z = −3.752; p = 0.001
Children ETS from outdoor smokers number of cigarettes/week)
Intervention group	0.83 (0.47–1.18)	1.02 (0.86–1.18)
Control group	0.86 (0.63–1.09)	1.20 (1.05–1.35)
Statistics	Z = −1.025; p = 0.305	Z = −2.154; p = 0.031

Note: Values are geometric means with 95% confidence intervals (95 % CI).