Table 1. Participant Baseline Characteristics.
| Characteristic | WFS (n = 199) | WFS plus coaching (n = 201) |
|---|---|---|
| Age, mean (SD), y | 40.2 (11.3) | 40.9 (11.1) |
| Weight, mean (SD), kg | 96.8 (16.0) | 97.4 (15.9) |
| BMI, mean (SD) | 34.3 (4.3) | 34.5 (4.4) |
| BMI category, No. (%) | ||
| Obese (30-45) | 168 (84.4) | 166 (82.6) |
| Overweight (27-29.9) | 31 (15.6) | 35 (17.4) |
| Sex, No. (%) | ||
| Female | 152 (76.4) | 153 (76.1) |
| Male | 47 (23.6) | 48 (23.9) |
| Race, No. (%) | n = 186a | n = 196a |
| American Indian or Alaska Native | 0 (0.0) | 2 (1.0) |
| Asian | 7 (3.8) | 10 (5.0) |
| Black or African American | 33 (17.7) | 48 (24.5) |
| Native Hawaiian or Pacific Islander | 0 | 3 (1.5) |
| White | 138 (74.2) | 128 (65.3) |
| More than 1 indicated | 8 (4.3) | 5 (3.0) |
| Hispanic ethnicity, No./total No. (%) | 25/199 (12.6) | 20/201 (10.0) |
| Education level, No. (%) | ||
| College graduate | 171 (85.9) | 178 (88.6) |
| College 1-3 y | 26 (13.1) | 18 (9.0) |
| High school graduate | 2 (1.0) | 5 (2.5) |
| Marital status, No. (%) | ||
| Married | 68 (34.2) | 83 (37.8) |
| Never married | 76 (38.2) | 66 (32.8) |
| Coupled | 32 (16.1) | 31 (15.4) |
| Divorced | 18 (9.0) | 16 (8.0) |
| Separated | 4 (2.0) | 2 (1.0) |
| Widowed | 1 (0.5) | 3 (1.5) |
| Income, No. (%) | ||
| >$75k | 94 (48.7) | 94 (49.5) |
| $50k to $75k | 45 (23.3) | 36 (18.9) |
| $35k to $49.9k | 25 (13.0) | 23 (12.1) |
| $25k to $34.9k | 15 (7.8) | 20 (10.5) |
| ≤$24.9k | 14 (7.3) | 17 (8.9) |
Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); WFS, wireless feedback system.
a
The number of participants for the race category represent nonmissing values, which serve as denominator for subsequent percentages.