TABLE 1

Characteristics of Study Population

TotalWritten Reminder, n = 219Conventional Text Message, n = 225Educational Text Message, n = 216P
Age.91
 6–23 mo484 (73.3)161 (73.5)163 (72.4)160 (74.1)
 24–59 mo66 (10.0)21 (9.6)26 (11.6)19 (8.8)
 5–8 y110 (16.7)37 (16.9)36 (16.0)37 (17.1)
Gender.66
 Girl327 (49.5)114 (52.1)108 (48.0)105 (48.6)
 Boy333 (50.5)105 (47.9)117 (52.0)111 (51.4)
Race/ethnicity.57
 Latino586 (88.8)199 (90.9)201 (89.3)186 (86.1)
 African American58 (8.8)14 (6.4)19 (8.4)25 (11.6)
 White2 (0.3)1 (0.5)0 (0)1 (0.5)
 Other14 (2.1)5 (2.3)5 (2.2)4 (1.9)
Language most comfortable speaking with health care provider.47
 Spanish341 (51.7)121 (55.3)112 (49.8)108 (50.0)
 English318 (48.2)98 (44.7)112 (49.8)108 (50.0)
 Other1 (0.2)0 (0)1 (0.4)0 (0)
Insurance.15
 Medicaid/State Children’s Health Insurance Program 638 (96.7)208 (95.0)219 (97.3)211 (97.7)
 Commercial14 (2.1)7 (3.2)2 (0.9)5 (2.3)
 Uninsured8 (1.2)4 (1.8)4 (1.8)0 (0)
Education.56
 < High school110 (16.7)33 (15.1)38 (16.9)39 (18.1)
 High school230 (34.8)83 (37.9)70 (31.1)77 (35.6)
 At least some college320 (48.5)103 (47.0)117 (52.0)100 (46.3)
Text message plan type.65
 Unlimited plan583 (88.3)190 (86.8)200 (88.9)193 (89.4)
 Limited plan74 (11.2)27 (12.3)24 (10.7)23 (10.6)
 Did not know3 (0.5)2 (0.9)1 (0.4)0 (0)
Text message frequency.18
 At least weekly609 (92.3)207 (94.5)201 (89.3)201 (93.1)
 Less often than weekly39 (5.9)11 (5.0)17 (7.6)11 (5.1)
 Never12 (1.8)1 (0.5)7 (3.1)4 (1.9)
S-TOFHLAa.99
 Adequate434 (85.9)140 (86.4)149 (85.6)145 (85.8)
 Marginal27 (5.3)8 (4.9)10 (5.7)9 (5.3)
 Inadequate44 (8.7)14 (8.6)15 (8.6)15 (8.9)
  • Data are presented as n (%).

  • a Short Test of Functional Health Literacy in Adults (S-TOFHLA) not available on all participants because of family’s time availability at enrollment.