Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
4 without a DOI — not checked. A reference
deposited without a DOI is never matched by title or guessed at; it stays outside the checked
set, and this line discloses that.
Social mixing patterns for transmission models of close contact infections: exploring self-evaluation and diary-based data collection through a web-based interface
An Introduction to Propensity Score Methods for Reducing the Effects of Confounding in Observational Studies
The 4 references without a DOI — listed, not checked
no DOI — not checkedThe Government of the Hong Kong Special Administrative Region Census and Statistics Department. Thematic Household Survey Report - Report No. 56, http://www.censtatd.gov.hk/hkstat/sub/sp453.jsp?productCode=C0000085 (2015).
no DOI — not checkedKenny, D. A. Learn how you can do a mediation analysis and output a text description of your results: Go to mediational analysis using DataToText using SPSS or R, http://davidakenny.net/cm/mediate.htm (2016).
no DOI — not checkedHo, D., Imai, K., King, G. & Stuart, E. MatchIt: Nonparametric Preprocessing for Parametric Causal Inference, https://gking.harvard.edu/matchit (2017).
no DOI — not checkedSilverman, B. W. Density estimation for statistics and data analysis. Vol. 26 (CRC press, 1986).
What this badge says. CiteStamped means the CHECKABLE references of this
work were clean at the dated check: each resolved to a known work in a public registry, and none
carried a retraction notice at that time. It says nothing about the quality, findings,
or importance of the work itself, and nothing about references deposited without a DOI.
checked 2026-07-24 — re-checked daily as this page is visited;
titles and statuses come from Crossref and DataCite and are not part of the signed record
Both snippets point at the live badge image and link back to this page. The
badge re-renders from the daily check, so an embed never goes stale by more than a day of visits.