Table 3.
Final Models Predicting Physical Functioning (PCS-12), Mental Functioning (MCS-12), Disability (SDI), and Quality of Life (QOL) (N = 1,801)
| PCS-12 ↑Scores Indicate Better Physical Functioning | MCS-12 ↑Scores Indicate Better Mental Health Functioning | SDI ↑Scores Indicate More Disability | QOL ↑Scores Indicate Better Quality of Life | |||||
| Characteristics | Coeff | 95% CL | Coeff | 95% CL | Coeff | 95% CL | Coeff | 95% CL |
| Intercept | 48.23* | 45.29, 51.17 | 49.85* | 46.80, 52.89 | 1.17† | 0.15, 2.19 | 7.99* | 7.18, 8.80 |
| Demographics, P value | <.001 | <.001 | <.001 | <.001 | ||||
| Age‡ | 0.28 | 1.04 | 0.07 | 0.26 | ||||
| Male | 0.86† | 0.10, 1.67 | −0.17 | −0.98, 0.63 | 0.04 | −0.23, 0.32 | −0.41* | −0.62, −0.20 |
| Education‡ | 3.04† | 0.38 | 0.30 | 2.29 | ||||
| Ethnic group‡ | 3.00† | 2.59 | 0.38 | 1.52 | ||||
| Marital status‡ | 0.46 | 1.09 | 0.64 | 3.54† | ||||
| Organization‡ | 3.79§ | 8.02* | 3.65§ | 2.71§ | ||||
| Psychological, P value | <.016|| | <.001|| | <.001|| | <.001|| | ||||
| Depression severity, ↑scores indicate ↑ severity | −0.26* | −1.90, −0.63 | −3.96* | −4.62, −3.29 | 1.43* | 1.21, 1.66 | −1.24* | −1.44, −1.05 |
| Chronic depression | 0.14 | −0.73, 1.00 | −0.40 | −1.32, 0.51 | −0.07 | −0.37, 0.23 | −0.01 | −0.24, 0.23 |
| Positive screening test for PTSD | 0.06 | −0.95, 1.07 | −0.04 | −1.02, 1.09 | 0.20 | −0.16, 0.56 | −0.01 | −0.29, 0.26 |
| Positive screening test for panic | 0.05 | −0.75, 0.84 | −0.23 | −1.06, 0.60 | 0.05 | −0.23, 0.33 | −0.03 | −0.25, 0.18 |
| Neuroticism, ↑ scores indicate ↑ neuroticism | −0.07† | −0.14, − 0.001 | −0.01 | −0.08, 0.06 | 0.003 | −0.02, 0.03 | 0.01 | −0.01, 0.03 |
| Positive screening test for mild cognitive Impairment | −1.13§ | −1.82, −0.44 | 0.14 | −0.58, 0.87 | 0.44§ | 0.20, 0.68 | 0.07 | −0.12, 0.25 |
| Medical illness, P value | <.001|| | .447|| | <.001|| | .071|| | ||||
| Chronic lung disease | −1.63* | −2.37, −0.89 | 0.11 | −0.66, 0.89 | 0.42§ | 0.16, 0.69 | −0.05 | −0.26, 0.15 |
| Hypertension | −0.99§ | −1.64, −0.34 | −0.28 | −0.96, 0.39 | 0.10 | −0.13, 0.32 | −0.02 | −0.20, 0.16 |
| Diabetes | −1.56* | −2.33, −0.78 | −0.27 | −1.09, 0.54 | 0.38§ | 0.11, 0.66 | −0.04 | −0.25, 0.17 |
| Arthritis | −2.09* | −2.77, −1.41 | 0.73† | 0.02,1.45 | 0.24 | −0.003, 0.48 | −0.13 | −0.32, 0.06 |
| Sensory deficit | −0.43 | −1.09, 0.24 | 0.04 | −0.65, 0.74 | 0.14 | −0.10, 0.37 | −0.11 | −0.29, 0.07 |
| Cancer excluding skin Cancer | −0.92 | −1.91, 0.08 | −0.35 | −1.39, 0.69 | 0.13 | −0.23, 0.48 | −0.06 | −0.33, 0.22 |
| Neurological disease | −1.80§ | −2.91, −0.69 | 0.25 | −0.93, 1.42 | 0.86* | 0.47, 1.25 | −0.21 | −0.52, 0.10 |
| Heart disease | −0.99§ | −1.71, −0.27 | −0.61 | −1.36, 0.14 | 0.32† | 0.06, 0.57 | −0.80§ | −1.39, −0.21 |
| Chronic pain | −3.08* | −3.78, −2.39 | −0.01 | −0.72, 0.71 | 0.56* | 0.32, 0.81 | −0.02 | −0.20, 0.17 |
| Gastrointestinal disease | −1.08§ | −1.86, −0.29 | −0.11 | −0.92, 0.71 | 0.12 | −0.16, 0.39 | −0.03 | −0.24, 0.18 |
| Urinary tract or prostate disease | −0.48 | −1.15, 0.19 | 0.38 | −0.31, 1.08 | 0.0001 | 0.24, 0.24 | −0.14 | −0.32, 0.05 |
| Interactions,Pvalue | .021|| | <.041|| | ||||||
| Depression chronicity X ethnic group‡ | 3.26† | |||||||
| Depression severity X heart disease | 0.35† | 0.01, 0.68 | ||||||
Coeff = coefficient; CL = confidence limits; PTSD = posttraumatic stress disorder.
* Indicates standardized regression coefficients with P ≤.001.
† Indicates standardized regression coefficients with P <.05 .
‡ Indicates joint test for categorical variables with more than 2 levels, collapsed across levels for presentation in table.
§ Indicates standardized regression coefficients with P <.01.
|| Indicates significance of difference of likelihood ratio χ2.