PHQ-4-Like Scale: Psychometric Evaluation Among Rural Chinese Adults

A psychometric evaluation of a four-item mental health screening scale derived from the PHQ-9 and GAD-7. The analysis is based on data from a follow-up survey of the China Multi-Ethnic Cohort, focusing on community-dwelling adults in rural Yunnan Province. The dataset was authored by Nan Cheng and last updated on 2026-05-29.

Use Cases

• Benchmarking the reliability of short-form mental health scales based on multivariate generalizability theory results.
• Evaluating item discrimination and information parameters for depression and anxiety screening based on item response theory analysis.
• Comparing the psychometric performance of a 4-item scale against a 16-item parent instrument in a specific demographic context.

Strengths

• Analysis reports specific composite reliability indices (e.g., 0.818) for the evaluated scale.
• The study applies modern measurement theories, including multivariate generalizability theory and item response theory.
• Focuses on a defined population sample from a rural Chinese community cohort.

Limitations

• The dataset is a 455.8 KB document; the underlying raw data or full analysis tables are not directly provided.
• Column-level documentation is absent; field semantics must be inferred after download.
• Data may reflect geographic and demographic bias inherent to the specific rural Yunnan sample.

Provenance

Source

Follow-up survey of the China Multi-Ethnic Cohort.

Collection Method

Psychometric evaluation using the Chinese version of a combined PHQ-9 and GAD-7 scale.

Freshness

Last updated 2026-05-29 06:20:37; freshness should be verified.

Geography

Rural areas of Yunnan Province, China.