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. 2018 Aug;2(8):565-572.
doi: 10.1038/s41562-018-0391-7. Epub 2018 Aug 6.

Marital violence and fertility in a relatively egalitarian high-fertility population

Jonathan Stieglitz  1   2 , Benjamin C Trumble  3   4 , Hillard Kaplan  5 , Michael Gurven  6
Affiliations

Marital violence and fertility in a relatively egalitarian high-fertility population

Jonathan Stieglitz et al. Nat Hum Behav. 2018 Aug.
No abstract available

Keywords: Intimate partner violence; Tsimane; fertility; marriage; sexual coercion; sexual conflict.

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Conflict of interest statement

COMPETING INTERESTS The authors declare no competing interests.

Figures

Figure 1.
Figure 1.
Cumulative relative frequency of IPV (red line) by year of marriage and mean number of joint dependent offspring <10 years old (black bars). Wives experience, on average, 50% of all IPV incidents before year 6 of marriage, when a couple averages 1.5 joint dependents (n=89 wives; omits 16 wives [15%] who never experienced any IPV in their lifetime).
Figure 2.
Figure 2.
Predicted probability of birth/year (95% CI) by a wife’s age and whether she reports IPV that year (n=1,905 marital years, 105 wives). Fitted values are derived from Supplementary Table 3: model 2 (holding controls at sample means). Abused wives attain peak annual fertility at age 29 years (predicted probability=0.43 vs. 0.35 for age-matched non-abused wives), while non-abused wives attain peak fertility at age 22 years (predicted probability=0.38 vs. 0.40 for age-matched abused wives).
Figure 3.
Figure 3.
Annual fertility (bootstrapped 95% CI) within marriage for wives (W) who remarried (n=26), by whether a wife experiences IPV with each husband (H). All but two wives remarried once, and to minimize potential recall bias we analyzed the two most recent marriages for the two wives who remarried twice. Wife’s mean±SD age at remarriage=24.3±8.0.
Figure 4.
Figure 4.
Effect of a husband’s attitudes regarding intersexual control (all models) and intrasexual physical aggression (model 2), and a husband’s (models 3–4) and wife’s (models 5–6) childhood exposure to family violence on the probability of a wife reporting IPV/year (n=909 marital years, 49 wives; parameter estimates and 95% CIs are shown in Supplementary Table 7).
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References

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