Perceived digital health information support and self-rated health among Chinese adults: physical activity mediation and chronic health condition moderation.
Yang X, Fu X, et al. • Frontiers in public health • 2026
Perceived digital health information support was positively associated with self-rated health among Chinese adults, with physical activity serving as a statistically significant indirect behavioral pathway, particularly strengthened among adults with chronic health conditions.
Key Findings
Results
Perceived digital health information support was positively associated with self-rated health among Chinese adults.
Cross-sectional study using data from the Chinese General Social Survey (CGSS) 2021 health module
Analytic sample consisted of 2,690 respondents
Multivariable linear regression used community-clustered robust standard errors and province fixed effects
Robustness checks included weighted models, complete-case sensitivity analyses, and ordered logit models
Results
Perceived digital health information support was positively associated with physical activity.
This association was identified as part of the mediation pathway analysis
Bootstrap mediation analysis used 5,000 resamples
Physical activity served as the mediating variable between perceived digital health information support and self-rated health
The finding held across the full analytic sample of 2,690 respondents
Results
Physical activity represented a statistically significant indirect component of the association between perceived digital health information support and self-rated health.
The indirect component through physical activity accounted for 9.35% of the observed total association
Bootstrap mediation analysis with 5,000 resamples was used to test this indirect pathway
The mediation was identified using a standard indirect effects framework within multivariable regression
This pathway was described as 'one behavioral pathway statistically linking perceived online health information support to health evaluation'
Results
Chronic health conditions moderated the association between physical activity and self-rated health, strengthening it.
A second-stage moderated mediation model was used to test the role of chronic health conditions
Chronic health conditions strengthened the observed association between physical activity and self-rated health
This moderation was part of a moderated mediation framework examining whether the indirect pathway differed by chronic condition status
An ordered logit model including the physical activity by chronic condition interaction was used as a robustness check
Results
The indirect association between perceived digital health information support and self-rated health via physical activity differed significantly by age, but not by sex, marital status, or socioeconomic status.
Formal bootstrap contrasts were used to test subgroup differences
Age-based differences in the indirect association were statistically significant
Contrasts by sex, marital status, and socioeconomic status were not statistically significant
Subgroup analyses were conducted from a health equity perspective
What This Means
This research suggests that Chinese adults who find internet-based health information useful for understanding medical issues and making health-related decisions tend to rate their own health more positively. The study, which analyzed survey data from 2,690 adults collected in 2021, also found that being more physically active was part of the reason why people who perceived digital health information as helpful also reported better health — this physical activity pathway explained about 9.35% of the overall relationship between perceived digital health support and self-rated health.
The study also found that having a chronic health condition made the connection between physical activity and self-rated health even stronger, suggesting that staying active may be especially meaningful for people managing ongoing health issues. When the researchers looked at whether these patterns differed across different groups of people, they found that age made a significant difference in how the physical activity pathway operated, while differences by sex, marital status, and socioeconomic status were not statistically significant.
This research suggests that simply making health information available online may not be enough to improve population health. The findings point to the importance of combining accessible digital health information with practical opportunities for physical activity and in-person behavioral support, particularly to avoid widening existing health inequities. The authors caution that because people differ in how they access and use digital health resources, digital health tools could potentially increase rather than decrease health disparities if not designed with equity in mind.
Check Your Own Numbers
Upload your bloodwork. We'll cross-reference your results against this study and 4,700 others.
Yang X, Fu X, Wu Z, Xiao L, Luo M. (2026). Perceived digital health information support and self-rated health among Chinese adults: physical activity mediation and chronic health condition moderation.. Frontiers in public health. https://doi.org/10.3389/fpubh.2026.1919116