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. 2009 Nov 24;9:430. doi: 10.1186/1471-2458-9-430

Table 6.

10-11 year old children in Wales allocated to each tertile by number of parent figures who smoke in the home.

Low
(<0.10 ng/ml)
n(%)
Medium
(0.10-0.50 ng/ml)
n(%)
High
(>0.50 ng/ml)
n(%)
Total
n
Neither parent smokes in home 2007 549 (64.36) 244 (28.60) 60 (7.03) 853
2008 638 (70.03) 198 (21.73) 75 (8.23) 911
Father figure smokes in home 2007 28 (20.59) 41 (30.15) 67 (49.26) 136
2008 18 (13.64) 47 (35.61) 67 (50.76) 132
Mother figure smokes in home 2007 12 (8.39) 31 (21.68) 100 (69.93) 143
2008 12 (9.22) 28 (19.86) 100 (70.92) 141
Both parents smoke in home 2007 8 (3.76) 19 (8.92) 186 (87.32) 213
2008 7 (4.24) 15 (9.09) 143 (86.67) 165