Table 1.

Study sample characteristics valid percentages, and mean reporting.

Characteristic	Intervention group (N = 339)				Control group (N = 173)
	N	(%)	M (SE)	SD	N	(%)	M (SE)	SD
Gender (female)	251	74.0			108	62.4
Race (Caucasian)	323	95.6			167	96.5
Two/less children in home	229	85.4			119	83.8
Stepchildren in the home	19	5.7			12	7.1
Two adults in the home	250	74.0			135	78.0
Family income ≤15,000	64	19.2			32	18.9
Attitudes—UMP			3.5 (0.02)	0.33			3.5 (0.02)	0.34
Attitudes—EXP			2.6 (0.02)	0.38			2.6 (0.03)	0.35
Attitudes—ATP			1.7 (0.02)	0.54			1.7 (0.04)	0.57
Parent-reported open communication—baseline			3.2 (0.02)	0.40			3.2 (0.03)	0.41
Parent-reported open communication—4 month			3.1 (0.02)	0.36			3.1 (0.04)	0.37
Parent-reported open communication—8 month			3.1 (0.03)	0.38			3.1 (0.04)	0.37
Parent-reported open communication—12 month			3.1 (0.02)	0.39			3.2 (0.04)	0.42
Adolescent-reported direct monitoring—baseline			2.8 (0.05)	0.96			2.8 (0.07)	0.94
Adolescent-reported direct monitoring—4 month			2.8 (0.07)	1.00			2.8 (0.09)	0.98
Adolescent-reported direct monitoring—8 month			2.6 (0.07)	0.98			2.7 (0.09)	0.96
Adolescent-reported direct monitoring—12 month			2.7 (0.08)	1.02			2.7 (0.10)	0.97

UMP: parent attitudes about the usefulness of the monitoring process; EXP: parent attitudes about the impact of monitoring on adolescent risk behavior and experimentation; ATP: parent attitudes about monitoring and the importance of adolescent trust and privacy.