Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Mean differences in mental health summary scores between the time of the COVID-NAKO questionnaire and the NAKO baseline examination, stratified by age group and sex
PHQ-stress; PHQ-9, depressive symptoms; GAD-7, anxiety symptoms; CI, confidence interval
