Table 1.
Baseline characteristics. There were no significant differences among treatment groups.
| Overall | Control | CP | PC | |
|---|---|---|---|---|
| Total, no. | 365 | 123 | 122 | 120 |
| Age (years), mean (SD) | 29.4 (4.3) | 29.6 (4.3) | 29.2 (4.2) | 29.4 (4.3) |
| Female, no. (%) | 254 (69.6) | 85 (69.1) | 84 (68.9) | 85 (70.8) |
| Race Category, no. (%) | ||||
| White | 205 (56.2) | 72 (58.5) | 68 (55.7) | 65 (54.2) |
| Black | 132 (36.2) | 42 (34.1) | 42 (34.4) | 48 (40.0) |
| Other | 28 (7.7) | 9 (7.3) | 12 (9.8) | 7 (5.8) |
| Hispanic Ethnicity, no. (%) | 21 (5.8) | 5 (4.1) | 9 (7.4) | 7 (5.8) |
| Education Level, no. (%) | ||||
| Some college or less | 130 (35.6) | 40 (32.5) | 39 (32.0) | 51 (42.5) |
| College Degree or higher | 235 (64.4) | 83 (67.5) | 83 (68.0) | 69 (57.5) |
| Personal Income Category, no. (%) | ||||
| <24,999 | 121 (34.0) | 43 (35.5) | 38 (31.9) | 40 (34.5) |
| 25,000 – 49,999 | 150 (42.1) | 50 (41.3) | 55 (46.2) | 45 (38.8) |
| ≥ 50,000 | 85 (23.9) | 28 (23.1) | 26 (21.8) | 31 (26.7) |
| In Committed Relationship, no. (%) | 217 (59.8) | 72 (59.0) | 72 (59.0) | 73 (61.3) |
| Student, no. (%) | 124 (34.3) | 42 (34.1) | 43 (35.8) | 39 (32.8) |
| Working, no. (%) | 308 (85.1) | 96 (79.3) | 107 (88.4) | 105 (87.5) |
| Weight in kg, mean (SD) | 101.0 (23.7) | 101.3 (22.6) | 102.4 (25.2) | 99.3 (23.4) |
| Body Mass Index (kg/m2), mean (SD) [min, max] | 35.2 (7.8) [24.9, 62.4] | 35.1 (7.5) [25.3, 61.6] | 35.7 (8.2) [25.1, 62.4] | 34.9 (7.5) [24.9, 58.9] |
| BMI Category, no. (%) | ||||
| Overweight, 25–29.99 kg/m2 | 109 (29.9) | 38 (30.9) | 36 (29.5) | 35 (29.2) |
| Class I obese, 30–34.99 kg/m2 | 110 (30.1) | 33 (26.8) | 34 (27.9) | 43 (35.8) |
| Class II obese, 35–39.99 kg/m2 | 52 (14.2) | 19 (15.4) | 16 (13.1) | 17 (14.2) |
| Class III obese, 40+ kg/m2 | 94 (25.8) | 33 (26.8) | 36 (29.5) | 25 (20.8) |
| Waist circumference in cm, mean (SD) | ||||
| Males | 111.7 (16.3) | 109.8 (14.6) | 113.8 (17.9) | 111.5 (16.4) |
| Females | 108.2 (16.8) | 107.9 (15.7) | 109.3 (18.4) | 107.4 (16.4) |
| Hypertensiona, no. (%) | 59 (16.2) | 20 (16.3) | 20 (16.4) | 19 (15.8) |
| HEIb Score, mean (SD) | 51.0 (4.1) | 50.7 (4.4) | 51.6 (4.2) | 50.8 (3.6) |
| Leisure time physical activity (kcal/week), mean (SD)C | 879.7 (1,134.2) | 865.9 (1,133.9) | 1,009.3 (1,346.4) | 756.0 (846.1) |
Abbreviations: CP, Cell Phone Intervention; PC, Personal Coaching Intervention; SD, standard deviation; BMI, body mass index, calculated as weight in kilograms divided by height in meters squared; HEI, Healthy Eating Index.
Missing Values: Income:9; Relationship Status:2; Student:3; Work:3; HEI:32; Physical Activity:18
a
Hypertension defined as SBP > 140 or DBP > 90 mmHg or taking BP Meds.
b
Healthy eating index (HEI-2005) (http://riskfactor.cancer.gov/tools/instruments/asa24/)
C
Reports of > 10 flights climbed per day were considered implausible and excluded from analysis.