Comparative analysis of natural versus ovarian stimulation cycles in intrauterine insemination by diverse infertility indications.
Ovulatory disorders are linked to higher clinical pregnancy rates in IUI, but the differences between natural and ovarian stimulation cycles for various infertility types did not consistently show statistical significance.
Where it sits
this study against the rest of the hcg (human chorionic gonadotropin) corpusSummary and findings
This study analyzed clinical intrauterine insemination (IUI) outcomes among 1451 infertile couples, comparing natural cycle (NC) and ovarian stimulation cycle (OSC) IUI. The findings indicated that patients with ovulatory disorders had higher clinical pregnancy and live birth rates compared to those with normal ovulation. However, the differences in outcomes between NC and OSC for various infertility indications did not consistently reach statistical significance.
Abstract
Objective To describe clinical intrauterine insemination (IUI) outcomes among infertile patients with different infertility indications, and further compare reproductive outcomes between natural cycle (NC) and ovarian stimulation cycle (OSC) IUI. Materials and methods A total of 1451 infertile couples that underwent their first IUI cycle with husband sperm were included in this retrospective cohort study. The clinical pregnancy rates and live birth rates were compared between NC and OSC by diverse infertility indications. Results A total of 833 NC-IUI and 618 OSC-IUI cycles were available for analysis. Logistic regression showed patients with ovulatory disorder had significantly higher clinical pregnancy (21.99% vs 14.15%; AOR 1.992, 95% CI 1.207-3.288) and live birth rates (18.67% vs 11.51%; AOR 2.326, 95% CI 1.312-4.124), along with a higher preterm birth rate (p = 0.032) when compared to the normal ovulation group. Among normal ovulatory patients, NC-IUI achieved higher clinical pregnancy rate than OSC-IUI in endometriosis (12.70% vs 8.00%), tubal infertility (16.67% vs 7.14%), and male factor group (15.92% vs 9.40%, p = 0.047), with similar live birth trends. For unexplained infertility, OSC‑IUI presented higher clinical pregnancy (20.51% vs 12.89%, p = 0.205) and live birth rates (12.82% vs 11.11%, p = 0.970), without statistical significance. Conclusion Ovulatory disorder was independently associated with favorable IUI outcomes. For patients with endometriosis, tubal factor infertility and male factor infertility, NC-IUI showed a potential trend of clinical applicability, while OSC-IUI tended to be more suitable for unexplained infertility; however, these subgroup differences did not reach statistical significance and warrant further validation in larger cohorts.
Background
The paper addresses the effectiveness of natural versus ovarian stimulation cycles in intrauterine insemination (IUI), a common procedure for treating infertility. Previous studies have shown varying success rates with these approaches, but comprehensive comparisons are limited. This study is significant as it seeks to clarify which method may be more effective across different infertility indications.
Methods
The study design and specific population details are not reported in the abstract. The sample size, dosing regimen, duration, and primary versus secondary outcome measures are also not specified.
Results
Not reported in abstract.
Interpretation
Without specific results, it is difficult to compare this study's findings to existing literature or assess the clinical significance of any observed effects. The lack of detailed outcomes limits the ability to draw conclusions about the efficacy of the different IUI cycles.
Key findings
- Not reported in abstract.
Limitations
- Not reported in abstract.