Table 1.

Child demographic characteristics for study sample and cotinine control sample

	Study sample (n = 124)		Control sample (n = 29)
Parent or child variable	n	%	n	%
Child variables
Child age (years)
0–5	52	41.9	10	34.5
6–12	37	29.9	10	34.5
13–17	35	28.2	9	31.0
Child gender
Male	63	50.8	15	51.7
Female	61	49.2	15	48.3
Child race
White	97	78.2	24	82.8
Non-White	27	21.8	5	17.2
Diagnosis
CNS	10	8.1	2	6.9
Leukemia/lymphoma	82	66.1	22	75.9
Solid tumor	32	25.8	5	17.2
Time since diagnosis
<6 months	87	70.2	13	44.8
≥6 months	37	29.8	16	55.2

Note. CNS = central nervous system.