Validation of a novel online depression symptom severity rating scale: the R8 Depression
Autor: | Kevin Fernand Jean Berna, Yuki Takao, Youjin Jo, Richard J Porter, Eduardo Figueroa, Kimio Yoshimura, Lee Andrew Kissane, Richard Tranter |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
Adult
Male Psychometrics Computer applications to medicine. Medical informatics R858-859.7 Mood disorder Patient Health Questionnaire External validity e-mental health 03 medical and health sciences Outcome measure 0302 clinical medicine Japan Cronbach's alpha Rating scale Validation Humans Medicine 030212 general & internal medicine Internal validity Depression (differential diagnoses) Psychiatric Status Rating Scales Patient-rated business.industry Depression Questionnaire Research Public Health Environmental and Occupational Health Reproducibility of Results General Medicine Middle Aged Scale Mood Research Design Quality of Life Anxiety medicine.symptom business Self-report 030217 neurology & neurosurgery New Zealand Clinical psychology |
Zdroj: | Health and Quality of Life Outcomes, Vol 19, Iss 1, Pp 1-15 (2021) Health and Quality of Life Outcomes |
ISSN: | 1477-7525 |
Popis: | Background An automated web-based assessment and monitoring system (www.psynary.com) has been developed to assist non-specialist clinicians in managing common mood and anxiety disorders. Psynary promotes the use of standardised outcome measures to assess symptom severity and optimise treatments with the aim of improving outcomes and enabling faster recovery. This paper analyses the results from two parallel studies in New Zealand and Japan (OptiMA-1 NZ and Japan) to assess the validity of the R8 Depression scale, one of the system’s core outcome measures. Methods Clinical samples were recruited from a public secondary care and a private psychiatry clinic. Participants completed the outcome measures for the study via the online Psynary system. The R8 Depression scale is a 30-item questionnaire which includes all symptom domains covered in the ICD-10 classification of depression. The Patient Health Questionnaire (PHQ-9) was completed at the same time points as the R8 Depression, with a smaller sample also completing a paper-based Quick Inventory of Depressive Symptomatology (QIDS-SR16). Internal validity was quantified via Cronbach’s alpha and Guttman lower bounds method. External validation against the PHQ-9 and QIDS used the Pearson’s and Kendall’s correlation coefficients. Severity categories were set using a multivariate regression model. Results 270 patients participated in the study and completed a maximum of 1 baseline and 5 reviews within a 90-day period, giving a total of 1124 assessments with the PHQ-9 also being completed in 1053 of these assessments. R8 Depression normative data was also collected from 204 non-clinical volunteers with 187 of these also completing the PHQ9. Internal reliability scores were all higher than 0.9 (n = 1328). There was overall good external validity when comparing the R8 Depression to the PHQ-9, with a correlation of 0.91 for the combined normative and clinical samples (n = 1240). Conclusions The R8 Depression has been developed as a patient-rated outcome measure for depression for administration on an online system called “Psynary”. It has high internal and external validity against current widely used scales. Further work is underway to determine the sensitivity to change of the R8 Depression. |
Databáze: | OpenAIRE |
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