Contraceptive use and fertility behaviour among Syrian migrant women

OBJECTIVES

This study aimed to investigate fertility behaviours and contraceptive use among Syrian migrant women in western Turkey.

METHODS

An epidemiological, single-centre, cross-sectional, descriptive study was conducted. The survey collected data on sociodemographic characteristics and types of marriage, use of contraceptive methods and fertility behaviours among 223 Syrian migrant women.

RESULTS

The women's mean (± standard deviation) age range was 29.6 ± 9.1 (range 18-49) years; 29.6% had no formal marriage status; 61.0% had had an arranged marriage. The mean age at first pregnancy was 19.5 ± 3.4 (13-39) years; 26.4% had become pregnant before the age of 18. In total, 94.2% of participants had knowledge of contraceptive methods. However, 47.5% did not use contraception and the main reason for this was to become pregnant again. Intrauterine devices and oral contraceptive pills were known as contraceptive methods by 67.7% and 72.2% of women, but used by only 16.1% and 8.5%, respectively. Withdrawal (22.0%) was the most used contraceptive method. There was a risk of unwanted pregnancy in 13.0% of participants. Arranged marriage and low educational level were determined to be risk factors for adolescent pregnancy.

CONCLUSION

Although Syrian migrant women were aware of contraceptive methods, the rate of method use was low.

Evolutionary demography of age at last birth: integrating approaches from human behavioural ecology and cultural evolution

Cultural evolutionary theory and human behavioural ecology offer different, but compatible approaches to understanding human demographic behaviour. For much of their 30 history, these approaches have been deployed in parallel, with few explicit attempts to integrate them empirically. In this paper, we test hypotheses drawn from both approaches to explore how reproductive behaviour responds to cultural changes among Mosuo agriculturalists of China. Specifically, we focus on how age at last birth (ALB) varies in association with temporal shifts in fertility policies, spatial variation and kinship ecologies. We interpret temporal declines in ALB as plausibly consistent with demographic front-loading of reproduction in light of fertility constraints and later ages at last birth in matrilineal populations relative to patrilineal ones as consistent with greater household cooperation for reproductive purposes in the former. We find little evidence suggesting specific transmission pathways for the spread of norms regulating ALB, but emphasize that the rapid pace of change strongly suggests that learning processes were involved in the general decline in ALB over time. The different predictions of models we employ belie their considerable overlap and the potential for a synthetic approach to generate more refined tests of evolutionary hypotheses of demographic behaviour.This article is part of the theme issue 'Bridging cultural gaps: interdisciplinary studies in human cultural evolution'.

Offspring sex preferences among patrilineal and matrilineal Mosuo in Southwest China revealed by differences in parity progression

Son preference predominates in China, yet there are patterned exceptions to this rule. In this paper, we test whether lineality (patrilineal versus matrilineal inheritance and descent) is associated with son versus daughter preference among the ethnic Mosuo (Na) of Southwest China. Our results show (i) an increased probability of continued fertility among matrilineal women after having a son compared with a daughter and (ii) an increased probability of continued fertility among patrilineal women after having a daughter compared with a son. These results are consistent with son preference among patrilineal Mosuo and more muted daughter preference among the matrilineal Mosuo. Furthermore, we show (iii) the lowest probability of continued fertility at parity 2 once women have one daughter and one son across both systems, suggesting that preferences for at least one of each sex exist alongside preferences for the lineal sex. The Mosuo are the only known small-scale society in which two kinship systems distinguish sub-groups with many otherwise shared cultural characteristics. We discuss why this, in conjunction with differences in subsistence, may shed light on the evolutionary underpinnings of offspring sex preferences.