Table 1. Baseline Characteristics of Study Participants.
| Demographic | No. (%) | ||
|---|---|---|---|
| Control (n = 64) | Intervention (n = 63) | Overall (n = 127) | |
| Age, mean (SD), y | 32.0 (5.6) | 32.7 (5.6) | 32.3 (5.6) |
| Race and ethnicity | |||
| African American/Black | 36 (56.2) | 34 (54) | 70 (55.1) |
| Hispanic (n = 119) | 4 (6.6) | 1 (1.7) | 5 (4.2) |
| White | 18 (28.1) | 20 (31.7) | 38 (29.9) |
| Othera | 10 (15.6) | 9 (14.3) | 19 (15) |
| Education | |||
| ≤High school | 15 (23.4) | 15 (23.8) | 30 (23.6) |
| Some college | 18 (28.1) | 18 (28.6) | 36 (28.3) |
| ≥Bachelor’s degree | 31 (48.4) | 30 (47.6) | 61 (48) |
| Married/domestic partnership | 32 (50.0) | 39 (61.9) | 71 (55.9) |
| Household income, $ (n = 118) | |||
| <25 000 | 13 (20.3) | 21 (33.3) | 34 (26.8) |
| 25 000-49 999 | 17 (26.6) | 5 (7.9) | 22 (17.3) |
| 50 000-99 999 | 13 (20.3) | 10 (15.9) | 23 (18.1) |
| ≥100 000 | 17 (26.6) | 21 (33.3) | 38 (29.9) |
| Medicaid insurance | 22 (34.4) | 30 (47.6) | 52 (40.9) |
| Unsafe neighborhood for walking | 4 (6.2) | 8 (12.7) | 12 (9.4) |
| Enrolled after COVID-19 shutdown | 21 (32.8) | 21 (33.3) | 42 (33.1) |
| Pregnancy and postpartum characteristics | |||
| Nulliparous | 27 (42.2) | 30 (47.6) | 57 (44.9) |
| Cesarean delivery | 26 (40.6) | 21 (33.3) | 47 (37) |
| Twins | 5 (7.8) | 0 (0.0) | 5 (3.9) |
| Preterm delivery | 16 (25.0) | 15 (23.8) | 31 (24.4) |
| Gestational diabetes | 8 (12.5) | 3 (4.8) | 11 (8.7) |
| Preeclampsia with severe features | 12 (18.8) | 13 (20.6) | 25 (19.7) |
| Currently taking blood pressure medication | 19 (29.7) | 20 (31.7) | 39 (30.7) |
| Postpartum wk, mean (SD) | 7.6 (2.8) | 8.2 (2.7) | 7.9 (2.7) |
| Working outside the home (n = 124) | 20 (31.2) | 11 (18.3) | 31 (25) |
| Health measures at time of enrollment | |||
| Blood pressure, mean (SD), mm Hg | |||
| Systolic | 123.7 (14.4) | 121.4 (12.9) | 122.6 (13.7) |
| Diastolic | 83.9 (11.9) | 82.2 (11.5) | 83 (11.7) |
| BMI, mean (SD) | 32.1 (8.0) | 32.1 (7.1) | 32.1 (7.5) |
| Diabetes | 1 (1.6) | 1 (1.6) | 2 (1.6) |
| Chronic hypertension | 15 (23.4) | 14 (22.2) | 29 (22.8) |
| Prior step tracker use | 39 (60.9) | 42 (66.7) | 81 (63.8) |
| Self-reported health status | |||
| Excellent, very good, or good | 50 (78.1) | 52 (82.5) | 102 (80.3) |
| Fair or poor | 14 (21.9) | 11 (17.5) | 25 (19.7) |
| Postpartum depression | 13 (20.6) | 16 (25.4) | 29 (23) |
| Baseline step count, mean (SD) | 6042 (2270) | 6175 (1920) | 6107 (2097) |
| Step goal | |||
| Increase from baseline, mean (SD), steps | 1886 (749) | 2035 (1116) | 1960 (948) |
| Selection, increase from baseline | |||
| 33 | 25 (39.1) | 21 (33.3) | 46 (36.2) |
| 40 | 8 (12.5) | 16 (25.4) | 24 (19.9) |
| 50 | 11 (17.2) | 13 (20.6) | 24 (18.9) |
| Custom goal | 20 (31.2) | 13 (20.6) | 33 (26) |
Abbreviation: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared).
a
Other race includes Asian, American Indian or Alaska Native, more than 1 race, other, and prefer not to answer.