Table 4.

Parental perception of their child's SHS exposures daily in comparison with SHS exposures reported by their child

Exposure hours to SHS daily	Parental-reported exposure			GM cotinine (n)~
	None	1 to 3 hours	> 3 hours
Self-reported exposure
None	142 (61.7+%)	80 (34.8%)	8 (3.5%)	0.37~ (230)
1 to 3 hours	174 (44.2%)	184 (46.7%)	36 (9.1%)	0.51~ (394)
> 3 hours	17 (23.9%)	42 (59.2%)	12 (16.9%)	0.83~ (71)
GM cot (n/%)++	0.38++ (333/47.9%)	0.59++ (306/44.0%)	0.69++ (56/8.1%)	695

Chi-square test: 41.088 df: 4, p < 0.0001

⁺ Percentages in bracket relate to the total of the self-reported exposure row.

⁺⁺ ANOVA test was performed with LSD post-hoc test and significant differences were observed between None with 1 to 3 and > 3 hours: F = 8.537, p < 0.0001

^~ ANOVA test was performed with LSD post-hoc test and significant differences were found between all three groups: F = 8.613, p < 0.0001