Table 1.
Distribution of select maternal and infant characteristics, n (%), for the groups in the text message-based intervention acceptability study
| Total intervention (n = 102) | Final analysis (n = 80) | Lost to follow-up (n = 22) | p-value | |
|---|---|---|---|---|
| Site | 0.068a | |||
| Hawai‘i | 52 (51.0) | 37 (46.3) | 15 (68.2) | |
| Puerto Rico | 50 (49.0) | 43 (53.8) | 7 (31.8) | |
| Maternal factors | ||||
| Pregravid BMI (mean [SD]) | 26.6 [6.9] | 26.7 [7.1] | 26.4 [6.0] | 0.873d |
| Age (mean [SD]) | 26.9 [5.3] | 27.0 [5.0] | 26.5 [6.4] | 0.688d |
| Age group | 0.024b* | |||
| 18–24 years | 42 (41.2) | 30 (37.5) | 12 (54.6) | |
| 25–31 years | 38 (37.3) | 35 (43.8) | 3 (13.6) | |
| 32–39 years | 22 (21.6) | 15 (18.8) | 7 (31.8) | |
| Racec/ethnicity | ||||
| Hispanic | 62 (62.0) | 52 (65.0) | 10 (50.0) | 0.216a |
| Native Hawaiian or Other Pacific Islander | 22 (21.6) | 17 (21.3) | 5 (22.7) | 0.881a |
| Asian | 22 (21.6) | 16 (20.0) | 6 (27.3) | 0.463a |
| American Indian or Alaska Native | 5 (4.9) | 5 (6.3) | 0 (0) | 0.582b |
| Black or African American | 15 (14.7) | 14 (17.5) | 1 (4.6) | 0.181b |
| White | 34 (33.3) | 31 (38.8) | 3 (13.6) | 0.039b* |
| Education | 0.449b | |||
| Less than college | 49 (49.5) | 38 (47.5) | 11 (57.9) | |
| Some college | 22 (22.2) | 20 (25.0) | 2 (10.5) | |
| College degree or higher | 28 (28.3) | 22 (27.5) | 6 (31.6) | |
| Parity | 0.126b | |||
| 1 | 41 (40.2) | 28 (35.0) | 13 (59.1) | |
| 2 | 36 (35.3) | 32 (40.0) | 4 (18.2) | |
| 3 | 15 (14.7) | 11 (13.8) | 4 (18.2) | |
| 4 or more | 10 (9.8) | 9 (11.3) | 1 (4.6) | |
| Use of prenatal vitamins | 97 (95.1) | 78 (97.5) | 19 (86.4) | 0.066b |
| Pregnancy complications | 43 (42.2) | 32 (40.0) | 11 (50.0) | 0.400a |
| Took vitamins while breastfeeding | 58 (56.9) | 47 (58.8) | 11 (50.0) | 0.463a |
| Gestational age (weeks; mean [SD]) | 39.0 [1.1] | 39.1 [1.1] | 38.8 [1.1] | 0.426d |
| Gestational weight gain (lb; mean [SD]) | 27.7 [11.2] | 27.6 [11.1] | 28.5 [12.1] | 0.749d |
| Infant factors | ||||
| Male | 51 (50.0) | 39 (48.8) | 12 (54.6) | 0.630a |
| Female | 51 (50.0) | 41 (51.3) | 10 (45.5) | |
| Up-to-date with vaccinations | 87 (85.3) | 68 (85.0) | 19 (86.4) | 1.00b |
Note: Column percentages; p-value represents final analysis vs lost to follow-up;
*p < 0.05; aAnalysis by Chi-square test; bAnalysis by Fisher’s exact test; cIncludes all races for mixed participants; dAnalysis by t-test, pooled