Table 2.
Anthropometric results at baseline and after 1 year among 123 employees (St. Louis, MO, USA, 2005–2006).
| Outcome | Worksite Aa (Assessment + Intervention) |
Worksite Ba (Assessment Only) |
P value between sitesb |
95% confidence interval for changes from baseline to 1 year between sitesc |
||
|---|---|---|---|---|---|---|
| Baseline | 1 year | Baseline | 1 year | |||
| N | 68 | 68 | 55 | 55 | ||
| Weight (kg) | 92.4 (24.9) | 91.6 (25.5) | 84.5 (20.9) | 85.1 (23.2) | 0.02 | (−3.90, −0.31) |
| Body mass index (kg/m2) | 34.5 (9.7) | 34.1 (9.8) | 31.1 (7.2) | 31.2 (7.9) | 0.02 | (−1.44, −0.11) |
| % Fat mass | ||||||
| All subjects | 44.8 (11.9) | 44.2 (12.0) | 39.2 (11.9) | 38.7 (12.7) | 0.52 | (−1.44, 0.74) |
| Females | 46.4 (10.5) | 45.9 (10.8) | 43.1 (9.1) | 42.4 (10.8) | ||
| Males | 23.5 (4.3) | 23.4 (2.9) | 21.9 (5.7) | 22.4 (6.1) | ||
| Fat mass (kg) | ||||||
| All subjects | 43.6 (21.7) | 42.9 (22.0) | 33.9 (16.6) | 34.2 (18.3) | 0.04 | (−3.08, −0.05) |
| Females | 45.2 (21.6) | 44.5 (22.0) | 37.0 (16.7) | 37.1 (18.8) | ||
| Males | 22.6 (7.8) | 22.1 (7.1) | 20.7 (7.7) | 21.7 (8.5) | ||
| Fat-free mass (kg) | ||||||
| All subjects | 48.8 (8.6) | 48.8 (8.6) | 49.7 (11.5) | 50.0 (12.1) | 0.04 | (−1.05, −0.12) |
| Females | 47.0 (5.4) | 47.0 (5.4) | 45.1 (4.9) | 45.2 (5.3) | ||
| Males | 71.3 (9.2) | 70.7 (11.2) | 70.1 (9.8) | 71.0 (11.0) | ||
a
Values represent mean (SD).
b
Site-by-time interaction.
c
Smoking status and use of weight-affecting drugs over time were controlled for in the analysis.