Evidence map›Paper›PMID 27044309›Full record

Observational studyBMC psychiatry2016

Validation of the Chinese version of the PHQ-15 in a tertiary hospital.

Lan Zhang, Kurt Fritzsche, Yang Liu, Jian Wang, Mingjin Huang, Yu Wang, Liang Chen, Shanxia Luo, Jianying Yu, Zaiquan Dong and 2 more

Abstract readObservational StudyValidation Study
In one paragraph

Observational study in BMC psychiatry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 2 pooled it
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

47 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Lan ZhangMental Health Center, West China Hospital of Sichuan University, No. 28 Dianxin S. St., Chengdu, Sichuan, 610041, P. R. China.
Kurt FritzscheDepartment of Psychosomatic Medicine and Psychotherapy, University Medical Centre Freiburg, Hauptstr. 8, D-79104, Freiburg, Germany. kurt.fritzsche@uniklinik-freiburg.de.
Yang LiuMental Health Center, West China Hospital of Sichuan University, No. 28 Dianxin S. St., Chengdu, Sichuan, 610041, P. R. China.
Jian WangMental Health Center, West China Hospital of Sichuan University, No. 28 Dianxin S. St., Chengdu, Sichuan, 610041, P. R. China.
Mingjin HuangMental Health Center, West China Hospital of Sichuan University, No. 28 Dianxin S. St., Chengdu, Sichuan, 610041, P. R. China.
Yu WangMental Health Center, West China Hospital of Sichuan University, No. 28 Dianxin S. St., Chengdu, Sichuan, 610041, P. R. China.
Liang ChenMental Health Center, West China Hospital of Sichuan University, No. 28 Dianxin S. St., Chengdu, Sichuan, 610041, P. R. China.
Shanxia LuoMental Health Center, West China Hospital of Sichuan University, No. 28 Dianxin S. St., Chengdu, Sichuan, 610041, P. R. China.
Jianying YuMental Health Center, West China Hospital of Sichuan University, No. 28 Dianxin S. St., Chengdu, Sichuan, 610041, P. R. China.
Zaiquan DongMental Health Center, West China Hospital of Sichuan University, No. 28 Dianxin S. St., Chengdu, Sichuan, 610041, P. R. China.
Liling MoMental Health Center, West China Hospital of Sichuan University, No. 28 Dianxin S. St., Chengdu, Sichuan, 610041, P. R. China.
Rainer LeonhartInstitute of Psychology, University of Freiburg, Freiburg, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis study aimed to investigate the reliability and validity of the Chinese version of the Patient Health Questionnaire (PHQ-15) in a tertiary hospital.

methodsUsing a cross-sectional study design, the Chinese version of the PHQ-15 was administered to a total of 1329 inpatients. To examine the discriminant validity of this questionnaire, we investigated the correlation of the PHQ-15 score with sociodemographic data and the PHQ-9 and GAD-7 scale scores. Exploratory factor analysis was performed to assess the internal consistency of the PHQ-15. To evaluate the consistency of this questionnaire with item response theory (IRT), IRT analysis was performed.

resultsThe Chinese version of the PHQ-15 showed good reliability (Cronbach's alpha = 0.83). The correlations of the PHQ-15 scores with the PHQ-9 depression scale scores (r = 0.565) and the GAD-7 anxiety scale scores (r = 0.512) were moderate; these results suggested that the PHQ-15 had discriminant validity. We identified three factors, referred to as "cardiopulmonary," "gastrointestinal," and "pain/neurological," which explained 56 % of the total variance. A second-order factor analysis including these three factors produced an acceptable model. Several items (4, 8 and 11) displayed extreme floor effects. Additionally, item 4 displayed a very small variance of 0.35 and showed very small differences in its thresholds based on IRT analysis.

conclusionsThe PHQ-15 scale had good reliability and high validity to detect patients with high somatic symptom severity in a Chinese tertiary hospital. Several of the current findings were consistent with previous research on the PHQ-15 in Western countries and in China. To improve the diagnostic quality of this questionnaire, items 4, 8 and 11 can be omitted.

Indexed as

Health StatusTertiary Care CentersChinaCross-Sectional StudiesFactor Analysis, StatisticalFemaleHumansLanguageMaleMiddle AgedPsychiatric Status Rating ScalesPsychometricsReproducibility of ResultsSurveys and QuestionnairesTranslatingChinaItem response theory analysisPatient Health Questionnaire (PHQ-15)Somatic symptomsValidation

Identifiers

PMID27044309
PMCPMC4820992

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.