Table 3.

Relationship between demographic factors and caregiver-reported experiences with receiving an SMS text message from a doctor or their office.

		Has received texts from doctors’ office
		Adjusted, n (%)		Risk difference (95% CI)
		Yes	No
Child ethnicity
	Not Hispanic or Latino	71.5 (855)	28.5 (323)	Reference
	Hispanic or Latino	74.2 (175)	25.8 (80)	2.7 (4.8 to 10.4)
Child race
	White	72.4 (660)	27.6 (240)	Reference
	Black	75.6 (206)	24.4 (68)	3.1 (5.8 to 11.1)
	Asian	61.1 (79)	38.9 (44)	11.3 (23.6 to 2.3)
	Other	69.6 (60)	30.4 (37)	2.8 (16.5 to 13.7)
Child age
	6-23 months	72.6 (983)	27.4 (368)	Reference
	2-8 years	60.1 (47)	39.9 (35)	12.6 (25.7 to 2.4)
Child health
	Excellent	72.2 (709)	27.8 (270)	Reference
	Very good	72.2 (255)	27.8 (97)	0.04 (6.3 to 7.1)
	Good, fair, or poor	68.6 (61)	31.4 (36)	3.6 (12.8 to 8.4)
Child insurance type
	Commercial insurance	71 (660)	29 (241)	Reference
	Public insurance or uninsured	73.5 (369)	26.5 (162)	2.5 (6.8 to 9.9)
Caregiver relation to child
	Mother	73.5 (933)	26.5 (341)	Reference
	Father, grandparent, or other	58.8 (96)	41.2 (62)	14.7 (23.7 to 5.9)
Caregiver age
	<30 years	67.8 (328)	32.2 (154)	Reference
	30-34 years	72.9 (367)	27.1 (134)	5.2 (0.8 to 11.6)
	35-39 years	74.3 (226)	25.7 (79)	6.6 (2.7 to 18.2)
	>40 years	79.2 (80)	20.8 (26)	11.4 (0.2 to 21.2)
Caregiver education
	Masters or doctorate	77.7 (260)	22.3 (76)	Reference
	Associates or bachelors	71.2 (375)	28.8 (144)	6.5 (11.8 to 0.6)
	Vocational school or some college	72 (184)	28 (73)	5.8 (13.2 to 2.1)
	High school or less	66.7 (210)	33.3 (109)	11 (19.6 to 2.3)
Preferred language for SMS text messages
	English	72.8 (985)	27.2 (366)	Reference
	Spanish	53.6 (45)	46.4 (37)	19.2 (30.4 to 4.4)