Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 726

The DOI matches its Crossref record.

Some data on natural fertility

Henry, Louis·1961·Eugenics Quarterly

Abstract

Data on the natural fertility (complete absence of birth control) of 13 populations are examined with the study restricted to legitimate birthrates and those of unmarried women in a stable union. Very different fertility levels were found among these populations despite a similar pattern of fertility as it varies from 1 age group to another. Where the fertility rates for European populations are greater than for the non-European differences can be attributed to variation in birth spacing. It is hypothesized that differences in fertility level are either the result of variations in behavior related to resumption of sexual relations and the duration of lactation or to the differences of a physiological nature related to frequency and duration of anovulation during lactation.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1080/19485565.1961.9987465

Cites

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cited by

See all 726

Metadata

Authors
Henry, L.
Venue
Eugenics Quarterly
Published
1961-06
Volume
8
Issue
2
Pages
81-91
ISSN
  • 0037-766X (ISSN-L)
  • 0097-2762
OpenAlex
W2025322481
Cited by
726
References
0
FWCI
7.97
Type
journal article
Language
en
Open access
closed

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Some data on natural fertility. https://app.cochat.ai/papers/10.1080/19485565.1961.9987465
The paper
Henry, L. (1961). Some data on natural fertility. Eugenics Quarterly. https://doi.org/10.1080/19485565.1961.9987465

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.