Independent covariates | Covariate strata | Crude hazard ratio (95% CI) | p-value | aHR (95% CI) | p-value |
---|---|---|---|---|---|
AGE(Years) | < 30 | ||||
30–34 | 0.89(0.75–1.05) | 0.175 | 0.92(0.77–1.1) | 0.3541 | |
35–38 | 0.79(0.51–1.21) | 0.2775 | 0.93(0.59–1.47) | 0.7607 | |
> 38 | 0.52(0.17–1.61) | 0.2537 | 0.72(0.23–2.25) | 0.5674 | |
Duration of Infertility (Years) | 0~2 | ||||
3~4 | 0.94(0.79–1.12) | 0.48 | 0.88(0.73–1.05) | 0.1029 | |
> 4 | 0.8(0.67–0.96) | 0.015 | 0.78(0.64–0.94) | 0.0895 | |
Type of Infertility | Primary Infertility | , | |||
Secondary Infertility | 0.86(0.75-1) | 0.0459 | 0.85(0.72–0.99) | 0.5403 | |
Treatment Protocols | Prolonged GnRH-agonist | ||||
GnRH-agonist | 0.7(0.57–0.85) | 0.0004 | 0.63(0.5–0.8) | 0.1598 | |
GnRH-antagonist | 0.67(0.46–0.97) | 0.0356 | 0.71(0.48–1.06) | 0.0094 | |
Mild Stimulation | 0.35(0.14–0.83) | 0.0175 | 0.4(0.15–1.08) | 0.0001 | |
Start Dose of Gonadotrophins(IU) | < 100 | ||||
100 | 1.2(0.94–1.54) | 0.1362 | 1.24(0.96–1.59) | 0.0968 | |
112.5 | 1.27(1-1.62) | 0.0497 | 1.24(0.97–1.6) | 0.0698 | |
> 112.5 | 0.78(0.56–1.08) | 0.1278 | 0.9(0.64–1.27) | 0.0358 | |
Oocytes Retrieved | 1~10 | ||||
11~15 | 1.54(1.26–1.88) | < 0.0001 | 1.54(1.25–1.89) | < 0.0001 | |
16~20 | 1.29(1.05–1.58) | 0.0151 | 1.28(1.04–1.58) | 0.0221 | |
> 20 | 0.95(0.77–1.17) | 0.6203 | 0.95(0.76–1.18) | 0.6249 |