Evidence map›Paper›PMID 41888650›Full record

ArticleWomen's health (London, England)

Counting every cycle: Validating a measure of period product insecurity in the United States.

Kelsey M Bowman

Abstract readValidation Study
In one paragraph

Article in Women's health (London, England). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. Article
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

1 author.

Kelsey M BowmanSanford School of Public Policy, Duke University, Durham, NC, USA.ORCID 0009-0008-3687-5331

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPeriod product insecurity (PPI), a material hardship characterized by the repeated inability to afford menstrual products, is rarely integrated into mainstream poverty research in part because we lack measures to capture its incidence.

objectivesThis article introduces and validates a new measurement instrument, the Van Ness Period Product Insecurity Scale (VNPPIS), which measures PPI.

designThe VNPPIS includes a 7-item gold standard scale for rigorous research applications and a 4-item short form tailored for time- or resource-constrained settings. The 7-item and 4-item scales capture four key domains of PPI: access and affordability, worry, coping, and consequences.

methodsScale development included cognitive interviews (

resultsResults from the national survey showed that roughly 40% of the U.S. adult population is eligible to be screened for PPI. After fielding the VNPPIS in a national sample, results show that approximately 20% of those screened were found to experience PPI, meaning 8% of the U.S. adult population are likely to experience PPI. Results demonstrate both VNPPIS versions' strong internal consistency and evidence of face, construct, and predictive validity. PPI is moderately correlated with food insecurity and other known financial strains but emerges as a distinct material hardship. Notably, PPI is a predictor of elevated risk for anxiety and depression, outperforming food insecurity.

conclusionThese findings affirm the VNPPIS as a reliable and valid tool that can inform research, policy design, and interventions.

Indexed as

Food InsecurityFood SupplyPovertyPsychometricsAdultFemaleHumansReproducibility of ResultsSurveys and QuestionnairesUnited Statesbasic needsmaterial hardshipperiod povertyperiod product insecuritysurvey design

Identifiers

PMID41888650
PMCPMC13033069

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.