42,369 responses from 1,461 respondents to 29 items.
| Description | National Eye Institute Visual Function Questionnaire – 25 (NEI-VFQ-25) |
|---|---|
| Reference | Huizinga, F., Heutink, J., de Haan, G. A., van der Lijn, I., van der Feen, F. E., Vrijling, A. C., ... & Koerts, J. (2020). The development of the Screening of Visual Complaints questionnaire for patients with neurodegenerative disorders: Evaluation of psychometric features in a community sample. PLoS One, 15(4), e0232232. |
| DOI | 10.1371/journal.pone.0232232 |
| Licence | CC0 1.0 |
| Source data | https://dataverse.nl/dataset.xhtml?persistentId=doi:10.34894/CMJXAK&version=1.1 |
| Responses | 42,369 |
|---|---|
| Respondents | 1,461 |
| Items | 29 |
| Response categories | 6 |
| Responses per respondent | 29 |
| Responses per item | 1,461 |
| Density | 1 |
| Longitudinal | FALSE |
| age range | Adult (18+) |
|---|---|
| sample | Internet-based, Targeted/specific |
| construct type | Physical health/functioning |
| measurement tool | Survey/questionnaire |
| item format | Likert Scale/selected response |
| primary language(s) | dut |
| construct name | National Eye Institute Visual Function Questionnaire – 25 (NEI-VFQ-25) |
This table has item text in the IRW: the wording administered to respondents, not just the response codes.
| Instrument | National Eye Institute Visual Functioning Questionnaire - 25 (VFQ-25), version 2000, self-administered format |
|---|---|
| Mean words per item | 1 |
| Mean characters per item | 2 |
| Mean characters per response | 17.623 |
| Flesch-Kincaid grade level | -3.400 |
cov_agecov_educationcov_neurologistcov_ophthalmologistcov_psychiatristcov_sexiditemresp
Or load it directly in R or Python:
# R
install.packages("remotes")
remotes::install_github("itemresponsewarehouse/Rpkg")
library(irw)
df <- irw_fetch("neurodegenerative_huizinga_2019_vfq")
# Python
pip install irw
import irw
df = irw.fetch("neurodegenerative_huizinga_2019_vfq")
| 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 |