3,640 responses from 455 respondents to 8 items.
One of 6 tables from the same source; this one measures Patient Health Questionnaire-8 (PHQ-8). The others are listed under Related tables.
| Description | PHQ-9 items 1-8 (item 9 not administered), past-month timeframe, 0-3; 455 US young adults aged 18-25 (Prolific); cov_gender, cov_race, cov_parent_education, cov_age, cov_sex, cov_n_violence_types, cov_perpetrator_group. |
|---|---|
| Reference | Kasparek, S., Cikara, M., Hatzenbuehler, M., & McLaughlin, K. (2025). Childhood violence exposure and social information processing in young adults: Does relationship with the perpetrator matter? Data: Harvard Dataverse, https://doi.org/10.7910/DVN/CCMJTJ |
| Licence | CC BY-NC-SA 4.0 |
| Source data | https://doi.org/10.7910/DVN/CCMJTJ |
| Responses | 3,640 |
|---|---|
| Respondents | 455 |
| Items | 8 |
| Response categories | 4 |
| Responses per respondent | 8 |
| Responses per item | 455 |
| Density | 1 |
| Longitudinal | FALSE |
| age range | Adult (18+) |
|---|---|
| sample | General/non-specific, Internet-based |
| construct type | Affective/mental health |
| measurement tool | Survey/questionnaire |
| item format | Likert Scale/selected response |
| primary language(s) | eng |
| construct name | Patient Health Questionnaire-8 (PHQ-8) |
This table has item text in the IRW: the wording administered to respondents, not just the response codes.
| Instrument | Patient Health Questionnaire (PHQ-9), items 1-8 |
|---|---|
| Mean words per item | 11.625 |
| Mean characters per item | 68.125 |
| Mean characters per response | 14 |
| Flesch-Kincaid grade level | 7.674 |
This codebook is reconstructed by the IRW from the IRW data standard and the script that built it, kasparek_2025_violence_psychopathology.py. It is our best reading, not the source’s own codebook, and it may contain mistakes. Where the two disagree, the source data are the authority. If you find an error, please tell us.
| Column | What it is | Source column |
|---|---|---|
| IRW standard columns | ||
id | IRW standard Identifier for the focal unit being measured — typically a person, but sometimes another entity (e.g., a word in a lexical task). | made in the build script |
item | IRW standard Item identifier. | made in the build script |
resp | IRW standard Response value. | made in the build script |
| Respondent covariates | ||
cov_age | Covariate | Age |
cov_gender | Covariate | Gender |
cov_n_violence_types | Covariate | num_all_violence |
cov_parent_education | Covariate | Highest_parent_edu |
cov_perpetrator_group | Covariate | perp_status |
cov_race | Covariate | Race_ethnicity |
cov_sex | Covariate | Sex |
What item codes and covariate values stand for is in the source’s codebook, 12014415.
Licence: CC BY-NC-SA 4.0 — non-commercial use only; adaptations must be shared under the same licence.
Or load it directly in R or Python (both need a free Redivis account; the first call opens a browser to sign in):
# R
install.packages("remotes")
remotes::install_github("itemresponsewarehouse/Rpkg")
library(irw)
df <- irw_fetch("kasparek_2025_phq8")
# Python
pip install irw
import irw
df = irw.fetch("kasparek_2025_phq8")
@misc{https://doi.org/10.7910/dvn/ccmjtj,
doi = {10.7910/DVN/CCMJTJ},
url = {https://dataverse.harvard.edu/citation?persistentId=doi:10.7910/DVN/CCMJTJ},
author = {Kasparek, Steven and Cikara, Mina and Hatzenbuehler, Mark and McLaughlin, Kate},
keywords = {Social Sciences},
title = {Childhood Violence Exposure, Social Information Processing, and Psychopathology in Young Adults},
publisher = {Harvard Dataverse},
year = {2025}
}
| IRW version | v584 |
|---|---|
| Redivis dataset | item_response_warehouse_5 v8.5 |
| Redivis dataset DOI | 10.57761/41xy-5k56 |
| Manifest pin for this IRW version | v8.5 |
| Metadata source | irw_meta v44.0 |