Table 4.
Mediation analysis: effects of multimorbidity on the PCS-12 subscale scores.
| Natural direct effect | Natural indirect effect | Marginal total effect | |
|---|---|---|---|
| β (95% CIϯ) | β (95% CIϯ) | β (95% CIϯ) | |
| Vascular-inflammatory class | |||
| Mediator: recent service use a,¥ | −5.38*** (−6.80, −3.98) | −0.17 (−0.26, 0.02) | −5.49*** (−6.93, −4.15) |
| Mediator: private insurance b | −5.66*** (−7.17, −4.24) | 0.16 (−0.05, 0.57) | −5.50*** (−6.93, −4.08) |
| Mediator: public insurance c,¥ | −5.38*** (−6.73, −3.86) | −0.27** (−0.53, −0.14) | −5.66*** (−7.03, −4.17) |
PCS-12, physical component summary score. ϯBias-corrected confidence interval. ¥The exposure–mediator interaction was not significant at the p < 0.05 level and not included in the model.
Adjusted for age, sex, education, employment, wealth, current alcohol use, past or present smoking status, physical activity level, public insurance coverage, and private insurance coverage.
Adjusted for age, sex, education, employment, wealth, current alcohol use, past or present smoking status, physical activity level, public insurance coverage, and recent service use.
Adjusted for age, sex, education, employment, wealth, current alcohol use, past or present smoking status, physical activity level, private insurance coverage, and recent service use.