Table 5.

Linear regressions for relations between teen demographics and objective measures of reliability of mobile phone service. The first group of predictors listed served as the comparison group for the binary logistic regression analyses and were coded as 0, while the second group was coded as 1.

Variable		Number of times ULMa						Number of times disconnected
		β		SE		95% CI		β		SE		95% CI
Caregiver
	Age		–0.01		0.01		–0.04 to 0.01		–0.03b		0.01		–0.05 to 0.00
	Non-Hispanic vs Hispanic		0.29		0.27		–0.24 to 0.82		0.26		0.25		–0.24 to 0.76
	Nonbilingual vs bilingual		0.00		0.23		–0.46 to 0.46		0.08		0.22		–0.35 to 0.52
	Less than versus more than high school education		0.01		0.01		–0.01 to 0.02		0.00		0.01		–0.01 to 0.02
Child
	Age		–0.02		0.09		–0.20 to 0.15		–0.05		0.08		–0.22 to –0.11
	Female vs male		0.02		0.24		–0.46 to 0.49		–0.46b		0.22		–0.90 to –0.02

^aULM: unable to leave voice message.

^bP<.05.