122,645 responses from 2,363 respondents to 9 items.
| Description | Patient Health Questionnaire-9 |
|---|---|
| Reference | Chen, S., Conwell, Y., Xue, J., Li, L. W., Tang, W., Bogner, H. R., & Dong, H. (2018). Protocol of an ongoing randomized controlled trial of care management for comorbid depression and hypertension: the Chinese Older Adult Collaborations in Health (COACH) study. BMC geriatrics, 18, 1-9. Shulin Chen; Yeates Conwell; Jiang Xue; Lydia Li; Tingjie Zhao; Wan Tang; Hillary R. Bogner; Hengjin Dong, 2022, "The Chinese Older Adult Collaborations in Health (COACH) Study", https://doi.org/10.7910/DVN/6RWH41, Harvard Dataverse, V1 |
| Licence | CC0 1.0 |
| Source data | https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/6RWH41 |
| Responses | 122,645 |
|---|---|
| Respondents | 2,363 |
| Items | 9 |
| Response categories | 4 |
| Responses per respondent | 51.902 |
| Responses per item | 13627.222 |
| Density | 5.767 |
| Longitudinal | TRUE |
| age range | Elderly (minimum age >50) |
|---|---|
| sample | Clinical |
| construct type | Affective/mental health |
| measurement tool | Observational rating |
| item format | Constructed Response |
| primary language(s) | chi |
| construct name | The Chinese Older Adult Collaborations in Health (COACH) Study |
This table has item text in the IRW: the wording administered to respondents, not just the response codes.
| Instrument | Patient Health Questionnaire-9 |
|---|---|
| Mean words per item | 11.778 |
| Mean characters per item | 68.778 |
| Mean characters per response | 15.250 |
| Flesch-Kincaid grade level | 7.135 |
iditemrespwave
Or load it directly in R or Python:
# R
install.packages("remotes")
remotes::install_github("itemresponsewarehouse/Rpkg")
library(irw)
df <- irw_fetch("COACH_Chen_2022_PHQ9")
# Python
pip install irw
import irw
df = irw.fetch("COACH_Chen_2022_PHQ9")
| IRW version | v393 |
|---|---|
| Redivis dataset | item_response_warehouse v53.0 |
| Redivis dataset DOI | 10.57761/4g08-xt41 |
| Manifest pin for this IRW version | v53.0 |
| Metadata source | irw_meta v23.0 |