Measurement invariances of the PHQ-9 across gender and age groups in Chinese adolescents.
Doris Yin Ping LeungYim-Wah MakSau Fong LeungVico Chung Lim ChiangAlice Yuen LokePublished in: Asia-Pacific psychiatry : official journal of the Pacific Rim College of Psychiatrists (2020)
The results support the claim that the PHQ-9 is a reliable and valid scale and can be used to assess and compare depressive severity across ages and genders during the period of adolescence.