Descriptive statistics for air pollution exposures, psychological distress, and covariates for participants with GHQ-28 at age 69.

Descriptive statistics for air pollution exposures, psychological distress, and covariates for participants with GHQ-28 at age 69.针对69岁时完成GHQ-28（General Health Questionnaire-28）测评的研究参与者，其空气污染暴露、心理困扰及协变量的描述性统计结果。