Table 2.
Proportional Hazard Models for Predicting Missed Visits in Look AHEAD Trial, First 48 Months
| Univariate model HR (95% CI) | Multivariate adjusted modelcHR (95% CI) | |
|---|---|---|
| Treatment Assignment | ||
| DSE | 1.35 (1.03, 1.76) | 1.46 (1.11, 1.91) |
| ILI | Reference | Reference |
| Race/ethnicitya | ||
| Non-Hispanic White | Reference | Reference |
| African American | 1.44 (1.03, 2.01) | 1.21 (.85, 1.74) |
| Hispanic | 1.60 (1.13, 2.27) | 1.41 (.98, 2.03) |
| Native Americans plus Others | .30 (.12, .74) | .58 (.22, 1.58) |
| Age (per 5 years) | 1.18 (1.06, 1.30) | 1.18 (1.05, 1.30) |
| Marital Status | ||
| Married | Reference | Reference |
| Not Married | 1.54 (1.18, 2.01) | 1.37 (1.04, 1.82) |
| Beck Depression Score | 1.05 (1.03, 1.07) | 1.04 (1.01, 1.06) |
| SF-36 General Healthb | .99 (.97, 1.01) | --- |
| SF-36 Emotional Roleb | .99 (.97, 1.01) | --- |
| SF-36 Mental Healthb | .98 (.97, 1.00) | --- |
| Feelings about exercise | ||
| Enjoy exercise | Reference | Reference |
| Neutral | 1.34 (.99, 1.79) | 1.27 (.94, 1.71) |
| Dislike exercise | 1.56 (1.02, 2.47) | 1.12 (.69, 1.81) |
| Number of hours/week family spends exercising with you | .90 (.80, 1.01) | --- |
| Number of days/week eat fast food | 1.06 (1.02, 1.11) | 1.03 (.99, 1.08) |
| Frequency of self-weighing | ||
| Never | 2.33 (1.47, 3.71) | 2.01 (1.25, 3.23) |
| Once a year | 1.62 (.93, 2.81) | 1.37 (.78, 2.40) |
| Every couple of months | 1.33 (.91, 1.93) | 1.21 (.82, 1.78) |
| Every month | 1.52 (1.00, 2.29) | 1.45 (.96, 2.20) |
| Every week | Reference | Reference |
| Everyday or more than once a day | 1.14 (.70, 1.86) | 1.21 (.74, 1.99) |
a
Dummy vectors for African Americans, Hispanics, and Native Americans plus Others compared to Non-Hispanic Whites were included in the same univariate model. Native American category includes Native Americans, Alaskan Natives, American Indian, Asian/Pacific Islander, and Other or Mixed Race.
b
SF-36 General Health, Emotional Role and Mental Health were included in the same univariate model.
c
Multivariate adjusted model included treatment assignment, race/ethnicity, age, marital status, depression score, frequency of fast food consumption, feelings about physical activity, and frequency of self-weighing.