Nicotine and cotinine in mothers' and infants' hair

Table 7: Neonatal hair concentrations of cotinine

Group, by mothers' smoking status Mean hair concentration, ng cotinine/mg hair Standard deviation Standard error Range

Active smokers
Mother only smoker in household
Mother and others in household smoke
Total
1.47
4.78
2.81 2.69
6.33
4.74 0.62
1.76
0.84 0.04-12.15
0.28-18.77
0.04-18.77

Passive smokers 0.62 0.72 0.15 0.06-2.54

Nonsmokers 0.26 0.24 0.04 0.06-1.34

Table 7: Neonatal hair concentrations of cotinine
Group, by mothers' smoking status	Mean hair concentration, ng cotinine/mg hair	Standard deviation	Standard error	Range
Active smokers Mother only smoker in household Mother and others in household smoke Total	1.47 4.78 2.81	2.69 6.33 4.74	0.62 1.76 0.84	0.04-12.15 0.28-18.77 0.04-18.77
Passive smokers	0.62	0.72	0.15	0.06-2.54
Nonsmokers	0.26	0.24	0.04	0.06-1.34