Table 3. Mean Differences on Measures of Health-Related Quality of Life and Well-Being by Latent Class in Analyses of Associations With Behaviors and Quality of Life (n = 4,184), HealthStyles Survey, 2010a .
| Measure | Class 1: Healthy, Meanb (95% CI) | Class 2: Physical Health Conditions, Meanb (95% CI) | Class 3: Mental Health Conditions, Meanb(95% CI) | Class 4: Physical and Mental Health Conditions, Meanb (95% CI) |
|---|---|---|---|---|
| Physically unhealthy days (range, 0–30)c | 0.9 (0.7–1.1) | 4.8 (4.1–5.5) | 5.8 (5.4–6.3) | 23.4 (22.7–24.0) |
| Mentally unhealthy days (range, 0–30)c | 1.4 (1.2–1.6) | 0.8 (0.2–1.5) | 6.2 (5.8–6.7) | 5.2 (4.3–6.0) |
| Activity limitation days (range, 0–30)c | 0.4 (0.2–0.6) | 3.8 (3.2–4.4) | 5.2 (4.7–5.6) | 21.1 (20.5–21.7) |
| PROMIS physical health T-scored | 52.3 (52.1–52.6) | 47.0 (46.3–47.8) | 43.2 (42.7–43.8) | 38.4 (37.7–39.2) |
| PROMIS mental health T-scored | 50.0 (49.7–50.2) | 49.4 (48.7–50.2) | 43.7 (43.2–44.3) | 43.5 (42.7–44.2) |
| Well-being score (range, 1–5)e | 3.6 (3.6–3.7) | 3.6 (3.5–3.7) | 3.0 (2.9–3.1) | 2.6 (2.5–2.7) |
Abbreviations: CI, confidence interval; PROMIS, Patient-Reported Outcomes Measurement Information System.
Overall means: physically unhealthy days = 3.24 (standard deviation [SD] = 7.49); mentally unhealthy days = 2.51 (SD = 6.23); activity limitation days = 2.22 (SD = 6.29); PROMIS physical health = 49.86 (SD = 8.29); PROMIS mental health = 49.47 (SD = 7.89); well-being score = 3.46 (SD = 0.91). All means correspond to the weighted sample.
Estimated marginal means controlled for age, race/ethnicity, sex, and yearly household income. All means correspond to the weighted sample.
Measured by using the Centers for Disease Control and Prevention’s Healthy Days measures (http://www.cdc.gov/hrqol/methods.htm).
Measured by using the Satisfaction with Life Scale (20).