Background: Nigeria’s fertility rate remains high at 5.3 births per woman, with rural areas recording even higher rates, largely due to early marriage, low contraceptive use, and limited female education. This study identifies the factors associated with a higher number of children ever born among married women in rural Nigeria. Methods: This study extracted data from the 2018 Nigeria Demographic and Health Survey (NDHS). A binary logistic regression model was employed to assess the determinants of higher fertility rates among married women, with statistical significance set at p ≤ 0.05 and a 95% confidence interval not including unity. Results: The findings revealed that 66.4% of respondents had more children, while 33.6% had fewer children. The factors significantly associated with higher fertility included maternal age, age at first birth, contraceptive use, desire for more children, and level of education. Women aged 30-39 were significantly more likely to have a higher child (aOR = 444.02; 95% CI: 210.37-937.18) than those aged 15-19. An early age at first birth was linked to increased fertility, while contraceptive use and higher educational attainment were associated with fewer children. Additionally, women residing in rural northern Nigeria exhibited higher fertility levels than those in the southern regions. Conclusion: The study highlights a high fertility rate among married women in rural Nigeria and the influence of sociodemographic factors. There is a need to focus on girl-child education, discourage early marriage, and expand access to contraceptive services, especially in rural northern Nigeria. Stakeholders should implement a broad public awareness campaign on smaller family sizes' health, economic and social benefits.
Published in | Biomedical Statistics and Informatics (Volume 10, Issue 3) |
DOI | 10.11648/j.bsi.20251003.11 |
Page(s) | 56-63 |
Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
Copyright |
Copyright © The Author(s), 2025. Published by Science Publishing Group |
Higher Fertility Rates, Married Women, Binary Logistic Regression Model, Rural Nigeria, NDHS
Variables | Frequency (%) |
---|---|
Current Age | |
15 - 19 years | 1556 (7.92) |
20 - 29 years | 7185 (36.57) |
30 - 39 years | 6276 (31.94) |
40 - 49 years | 4631 (23.57) |
Age at first marriage | |
< 20 years | 14609 (74.35) |
20 - 24 years | 3312 (16.86) |
25+ years | 1727 (8.79) |
Age at first birth | |
< 20 years | 11837 (64.96) |
20 - 24 years | 4609 (25.29) |
25+ years | 1775 (9.74) |
History of pregnancy termination | |
No | 16863 (85.83) |
Yes | 2785 (14.17) |
Contraceptive Use | |
No | 15096 (76.83) |
Yes | 4552 (23.17) |
Desired more children | |
No | 4634 (26.15) |
Yes | 13084 (73.85) |
Current marital status | |
Currently in union/living with a man | 18485 (94.08) |
Formerly in union/living with a man | 1163 (5.92) |
Religion | |
Christian | 7612 (38.74) |
Islam | 11850 (60.31) |
Traditional | 94 (0.48) |
Others | 92 (0.47) |
Education level | |
No Education | 10855 (55.25) |
Primary | 3432 (17.47) |
Secondary | 4542 (23.12) |
Tertiary | 819 (4.17) |
Currently working | |
No | 6346 (32.30) |
Yes | 13302 (67.70) |
Wealth Index | |
Poorest | 6135 (31.22) |
Poorer | 5733 (29.18) |
Middle | 4151 (21.13) |
Richer | 2445 (12.44) |
Richest | 1184 (6.03) |
Region of residence | |
North | 14925 (75.96) |
South | 4723 (24.04) |
Lifetime number of sexual partners | |
1 | 13189 (67.72) |
2 | 3650 (18.74) |
>=3 | 2636 (13.54) |
Factors | uOR | 95% CI for uOR | aOR | 95% CI for aOR |
---|---|---|---|---|
Current Age | ||||
15 - 19 years | 1.000 | 1.000 | ||
20 - 29 years | 77.371 | (37.173 - 161.038) * | 25.317 | (12.271 - 52.234) * |
30 - 39 years | 502.086 | (238.736 - 1055.94) * | 444.020 | (210.369 - 937.177) * |
40 - 49 years | 878.243 | (417.875 - 1845.794) * | 703.426 | (323.530 - 1529.405) * |
Age at first marriage | ||||
< 20 years | 1.000 | 1.000 | ||
20 - 24 years | 0.733 | (0.666 - 0.807) * | 0.895 | (0.714 - 1.123) |
25+ years | 0.598 | (0.524 - 0.683) * | 0.821 | (0.571 - 1.179) |
Age at first birth | ||||
< 20 years | 1.000 | 1.000 | ||
20 - 24 years | 0.609 | (0.558 - 0.665) * | 0.325 | (0.272 - 0.388) * |
25+ years | 0.407 | (0.357 - 0.465) * | 0.076 | (0.053 - 0.108) * |
History of pregnancy termination | ||||
No | 1.000 | 1.000 | ||
Yes | 1.088 | (0.989 - 1.196) | 1.203 | (0.991 - 1.396) |
Contraceptive Use | ||||
Yes | 1.000 | 1.000 | ||
No | 1.548 | (1.404 - 1.707) * | 1.281 | (1.082 - 1.516) * |
Desired more children | ||||
No | 1.000 | 1.000 | ||
Yes | 0.506 | (0.048 - 0.066) * | 0.201 | (0.157 - 0.257) * |
Current marital status | ||||
Currently in union/living with a man | 1.000 | 1.000 | ||
Formerly in union/living with a man | 0.920 | (0.773 - 1.095) | 0.863 | (0.776 - 1.195) |
Religion | ||||
Christian | 1.220 | (0.707 - 2.106) | 0.836 | (0.354 - 1.971) |
Islam | 1.477 | (0.855 - 2.553) | 0.873 | (0.528 - 0.850) |
Traditional | 3.072 | (1.278 - 7.383) * | 0.853 | (0.223 - 3.260) |
Others | 1.000 | 1.000 | ||
Maternal Education | ||||
No Education | 1.000 | 1.000 | ||
Primary | 1.049 | (0.940 - 1.170) | 0.865 | (0.701 - 1.067) |
Secondary | 0.435 | (0.394 - 0.480) * | 0.670 | (0.528 - 0.850) * |
Tertiary | 0.409 | (0.336 - 0.498) * | 0.566 | (0.398 - 0.805) * |
Currently working | ||||
No | 1.000 | 1.000 | ||
Yes | 1.763 | (1.631 - 1.905) * | 1.066 | (0.937 - 1.214) |
Wealth Index | ||||
Poorest | 1.000 | 1.000 | ||
Poorer | 0.852 | (0.773 - 0.940) * | 1.058 | (0.871 - 1.284) |
Middle | 0.779 | (0.700 - 0.867) * | 1.023 | (0.833 - 1.255) |
Richer | 0.713 | (0.634 - 0.802) * | 1.104 | (0.852 - 1.430) |
Richest | 0.545 | (0.460 - 0.647) * | 0.919 | (0.660 - 1.280) |
Region of residence | ||||
North | 1.000 | 1.000 | ||
South | 0.871 | (0.789 - 0.961) * | 0.862 | (0.783 - 0.931)* |
Lifetime number of sexual partners | ||||
1 | 1.000 | 1.000 | ||
2 | 1.222 | (1.116 - 1.339) * | 1.028 | (0.869 - 1.216) |
>=3 | 0.813 | (0.724 - 0.913) * | 0.826 | (0.679 - 1.005) |
TFR | Total Fertility Rate |
aOR | Adjusted Odds Ratio |
CI | Confidence Interval |
SD | Standard Deviation |
NDHS | Demographic and Health Survey |
UN | United Nations |
WHO | World Health Organization |
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APA Style
Ike-Wegbom, S. A., Wegbom, A. I., Nwaoburu, A. O. (2025). Determinants of Higher Fertility Rate of Married Women in Rural Nigeria. Biomedical Statistics and Informatics, 10(3), 56-63. https://doi.org/10.11648/j.bsi.20251003.11
ACS Style
Ike-Wegbom, S. A.; Wegbom, A. I.; Nwaoburu, A. O. Determinants of Higher Fertility Rate of Married Women in Rural Nigeria. Biomed. Stat. Inform. 2025, 10(3), 56-63. doi: 10.11648/j.bsi.20251003.11
@article{10.11648/j.bsi.20251003.11, author = {Salome Amarachi Ike-Wegbom and Anthony Ike Wegbom and Adolphus Okechukwu Nwaoburu}, title = {Determinants of Higher Fertility Rate of Married Women in Rural Nigeria }, journal = {Biomedical Statistics and Informatics}, volume = {10}, number = {3}, pages = {56-63}, doi = {10.11648/j.bsi.20251003.11}, url = {https://doi.org/10.11648/j.bsi.20251003.11}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.bsi.20251003.11}, abstract = {Background: Nigeria’s fertility rate remains high at 5.3 births per woman, with rural areas recording even higher rates, largely due to early marriage, low contraceptive use, and limited female education. This study identifies the factors associated with a higher number of children ever born among married women in rural Nigeria. Methods: This study extracted data from the 2018 Nigeria Demographic and Health Survey (NDHS). A binary logistic regression model was employed to assess the determinants of higher fertility rates among married women, with statistical significance set at p ≤ 0.05 and a 95% confidence interval not including unity. Results: The findings revealed that 66.4% of respondents had more children, while 33.6% had fewer children. The factors significantly associated with higher fertility included maternal age, age at first birth, contraceptive use, desire for more children, and level of education. Women aged 30-39 were significantly more likely to have a higher child (aOR = 444.02; 95% CI: 210.37-937.18) than those aged 15-19. An early age at first birth was linked to increased fertility, while contraceptive use and higher educational attainment were associated with fewer children. Additionally, women residing in rural northern Nigeria exhibited higher fertility levels than those in the southern regions. Conclusion: The study highlights a high fertility rate among married women in rural Nigeria and the influence of sociodemographic factors. There is a need to focus on girl-child education, discourage early marriage, and expand access to contraceptive services, especially in rural northern Nigeria. Stakeholders should implement a broad public awareness campaign on smaller family sizes' health, economic and social benefits. }, year = {2025} }
TY - JOUR T1 - Determinants of Higher Fertility Rate of Married Women in Rural Nigeria AU - Salome Amarachi Ike-Wegbom AU - Anthony Ike Wegbom AU - Adolphus Okechukwu Nwaoburu Y1 - 2025/09/25 PY - 2025 N1 - https://doi.org/10.11648/j.bsi.20251003.11 DO - 10.11648/j.bsi.20251003.11 T2 - Biomedical Statistics and Informatics JF - Biomedical Statistics and Informatics JO - Biomedical Statistics and Informatics SP - 56 EP - 63 PB - Science Publishing Group SN - 2578-8728 UR - https://doi.org/10.11648/j.bsi.20251003.11 AB - Background: Nigeria’s fertility rate remains high at 5.3 births per woman, with rural areas recording even higher rates, largely due to early marriage, low contraceptive use, and limited female education. This study identifies the factors associated with a higher number of children ever born among married women in rural Nigeria. Methods: This study extracted data from the 2018 Nigeria Demographic and Health Survey (NDHS). A binary logistic regression model was employed to assess the determinants of higher fertility rates among married women, with statistical significance set at p ≤ 0.05 and a 95% confidence interval not including unity. Results: The findings revealed that 66.4% of respondents had more children, while 33.6% had fewer children. The factors significantly associated with higher fertility included maternal age, age at first birth, contraceptive use, desire for more children, and level of education. Women aged 30-39 were significantly more likely to have a higher child (aOR = 444.02; 95% CI: 210.37-937.18) than those aged 15-19. An early age at first birth was linked to increased fertility, while contraceptive use and higher educational attainment were associated with fewer children. Additionally, women residing in rural northern Nigeria exhibited higher fertility levels than those in the southern regions. Conclusion: The study highlights a high fertility rate among married women in rural Nigeria and the influence of sociodemographic factors. There is a need to focus on girl-child education, discourage early marriage, and expand access to contraceptive services, especially in rural northern Nigeria. Stakeholders should implement a broad public awareness campaign on smaller family sizes' health, economic and social benefits. VL - 10 IS - 3 ER -