Table 2.
Relationship between demographic factors and caregiver-reported SMS text messaging plan type and usage.
| SMS text messaging plan type | SMS text messaging usage frequency | ||||||
| Adjusted, n (%) | Risk difference (95% CI) | Adjusted, n (%) | Risk difference (95% CI) | ||||
| Unlimited texts | Limited texts | Send or receive daily | Send or receive less than daily | ||||
| Child ethnicity | |||||||
| Not Hispanic or Latino | 1109 (93.8) | 72 (6.2) | Reference | 1098 (92.5) | 83 (7.5) | Reference | |
| Hispanic or Latino | 222 (92.2) | 32 (7.8) | 1.6 (6.4 to 2.5) | 215 (88.5) | 39 (11.5) | 4 (8.4 to 0.5) | |
| Child race | |||||||
| White | 858 (94.4) | 46 (5.6) | Reference | 868 (95) | 38 (5) | Reference | |
| Black | 256 (94.7) | 18 (5.3) | 0.3 (2.7 to 4) | 244 (88.9) | 30 (11.1) | 6.1 (9.8 to 1.9) | |
| Asian | 103 (83.2) | 19 (16.8) | 11.2 (21.5 to 0.6) | 90 (68.4) | 30 (31.6) | 26.6 (39.8, 11.8) | |
| Other | 82 (92.8) | 15 (7.2) | 1.6 (6.6 to 3.9) | 80 (94.1) | 16 (5.9) | 0.9 (8.5 to 2.7) | |
| Child age | |||||||
| 6-23 months | 1256 (93.6) | 95 (6.4) | Reference | 1240 (91.9) | 112 (8.1) | Reference | |
| 2-8 years | 75 (90.2) | 9 (9.8) | 3.4 (11.6 to 3.2) | 73 (88.9) | 10 (11.1) | 3 (9.8 to 2.5) | |
| Child health | |||||||
| Excellent | 916 (93.8) | 65 (6.2) | Reference | 898 (91.5) | 84 (8.6) | Reference | |
| Very good | 328 (93.8) | 25 (6.2) | 0.1 (2.7 to 2.2) | 332 (93.8) | 21 (6.2) | 2.3 (0.6 to 5.2) | |
| Good, fair, or poor | 83 (89.1) | 13 (10.9) | 4.8 (9.8 to 0.7) | 79 (88.3) | 17 (11.7) | 3.2 (7.9 to 1.5) | |
| Child insurance type | |||||||
| Commercial insurance | 853 (93.8) | 52 (6.2) | Reference | 847 (92) | 58 (8) | Reference | |
| Public insurance or uninsured | 477 (92.8) | 52 (7.2) | 1 (4.5 to 2.2) | 465 (91.4) | 64 (8.6) | 0.7 (4.5 to 2.8) | |
| Caregiver relation to child | |||||||
| Mother | 1185 (93.4) | 89 (6.6) | Reference | 1167 (91.6) | 108 (8.4) | Reference | |
| Father, grandparent, or other | 145 (93.5) | 15 (6.4) | 0.1 (4.1 to 4.2) | 145 (92.4) | 14 (7.6) | 0.8 (3.5 to 5.4) | |
| Caregiver age | |||||||
| <30 years | 458 (95) | 26 (5) | Reference | 443 (92.3) | 40 (7.7) | Reference | |
| 30-34 years | 467 (92.8) | 34 (7.2) | 2.1 (5.4 to 1) | 467 (92.4) | 34 (7.6) | 0.1 (3.4 to 3.7) | |
| 35-39 years | 284 (92.9) | 22 (7.1) | 2.1 (5.7 to 2) | 272 (89.6) | 34 (10.4) | 2.7 (7.4 to 1.7) | |
| >40 years | 92 (90.3) | 13 (9.7) | 4.7 (12.4 to 0.7) | 96 (92.1) | 10 (7.9) | 0.3 (5.7 to 5.2) | |
| Caregiver education | |||||||
| Masters or doctorate | 317 (94.7) | 21 (5.3) | Reference | 316 (94.8) | 21 (5.2) | Reference | |
| Associates or bachelors | 491 (93.7) | 29 (6.3) | 1 (3.6 to 3.2) | 488 (92) | 33 (8) | 2.8 (5.6 to 0.6) | |
| Vocational school or some college | 242 (94.6) | 15 (5.4) | 0.1, (4.1 to 4.6) | 236 (91.7) | 21 (8.3) | 3.1 (7.1 to 1.5) | |
| High school or less | 279 (90.8) | 39 (9.2) | 3.9 (10 to 2) | 272 (88.2) | 47 (11.8) | 6.6 (13.4 to 1.7) | |
| Preferred language for SMS text messages | |||||||
| English | 1270 (94) | 84 (6) | Reference | 1254 (92.6) | 100 (7.4) | Reference | |
| Spanish | 61 (86.7) | 20 (13.3) | 7.2 (27.1 to 1.8) | 59 (79.8) | 22 (20.2) | 12.7 (27.2 to 2.8) | |