Table 3.
Unadjusted and Adjusted Odds of Failure to Initiate a Weight Loss Program by Demographic, Clinical, and Psychosocial Factors, Overall and within Subset Having a Support Person
| Characteristic | All participants (n = 573) | Subset of participants with support person (n = 489) | ||
|---|---|---|---|---|
| Unadjusted Odds Ratio (95% Confidence Interval) | Adjusted Odds Ratio (95% Confidence Interval)a | Unadjusted Odds Ratio (95% Confidence Interval) | Adjusted Odds Ratio (95% Confidence Interval)a | |
| Age (10‐unit increase) | 0.71 (0.57, 0.90) | 0.74 (0.57, 0.96) | 0.65 (0.50, 0.84) | 0.73 (0.54, 0.99) |
| Weight (kg) at in‐person screen (Week ‐17) | 1.00 (0.99, 1.01) | 1.00 (0.99, 1.02) | ||
| Non‐white vs. White | 1.35 (0.81, 2.27) | 1.09 (0.60, 1.96) | ||
| Female | 2.19 (1.28, 3.75) | 1.65 (0.91, 2.98) | 2.84 (1.53, 5.24) | 2.19 (1.10, 4.39) |
| < High School Graduate vs High School Graduate | 1.66 (0.35, 7.87) | 1.99 (0.42, 9.46) | ||
| Current tobacco user | 0.60 (0.29, 1.25) | 0.62 (0.26, 1.47) | ||
| Past weight loss attempted | 1.11 (0.59, 2.08) | 0.70 (0.31, 1.62) | ||
| Lack of support person | 2.43 (1.34, 4.42) | 2.37 (1.28, 4.38) | n/a | n/a |
| Favorable expectations about weight loss | 1.05 (0.81, 1.36) | 0.97 (0.72, 1.31) | ||
| Self‐efficacy to initiate diet | 0.94 (0.51, 1.75) | 1.10 (0.54, 2.24) | ||
| Intentions to change diet | 0.87 (0.66, 1.15) | 0.87 (0.62, 1.20) | ||
| Autonomous motivation for eating healthy | 0.88 (0.61, 1.27) | 0.82 (0.55, 1.23) | ||
| Controlled motivation for eating healthy | 0.91 (0.77, 1.08) | 0.87 (0.72, 1.05) | ||
| Encouragement for making dietary changesb | n/a | 0.94 (0.89, 0.99) | 0.94 (0.89, 1.00) | |
| Discouragement for making dietary changesb | n/a | 1.02 (0.95, 1.09) | ||
| Self‐efficacy to initiate physical activity | 1.10 (0.65, 1.87) | 1.18(0.64, 2.18) | ||
| Intentions to engage in physical activity | 0.92 (0.76, 1.13) | 0.93 (0.74, 1.18) | ||
| Autonomous motivation for physical activity | 1.06 (0.76, 1.48) | 1.07 (0.73, 1.56) | ||
| Controlled motivation for physical activity | 0.92 (0.79, 1.13) | 0.87 (0.72, 1.05) | ||
| Participation in physical activityb | n/a | 1.00 (0.97, 1.02) | ||
a
Adjusted model included only those characteristics significant at the α = 0.05 level of significance in unadjusted analyses.
b
These measures were assessed only among the subset of n = 489 participants who responded that they had a support person.