Table 3.

Logistic regression

Category	Crude model	Model 1 a	Model 2 b
≥4 High-quality embryos	2.80 (1.90–4.13), < 0.001*	2.47 (1.64–3.70), < 0.001*	1.88 (1.20–2.95), 0.006*
≥35% High-quality embryos/ova captured	0.97 (0.69–1.37), 0.876	0.94 (0.65–1.34), 0.717	1.05 (0.69–1.58), 0.832
≥2 blastocyst embryos	3.40 (2.33–4.95), < 0.001*	3.54 (2.36–5.33), < 0.001*	3.30 (2.11–5.17), < 0.001*
≥35% blastocyst embryos /ova captured	1.96 (1.31–2.92), 0.001*	2.01 (1.30–3.10), 0.002*	1.94 (1.18–3.18), 0.009*
Implantation (pregnancy) c	1.79 (1.25–2.57), 0.002*	1.53 (1.05–2.23), 0.028*	1.49 (0.97–2.30). 0.070

Values are Odds ratio (95% confidence interval), p-value. * indicates a significant result (p < 0.05, two-tailed)

Crude model = odds ratios are no adjusted

^a Model 1 = odds ratios are adjusted by age and BMI. Note: 48 patients (41 implanted cycles) were missing BMI information

^b Model 2 = odds ratios are adjusted by age, BMI, and AFC

^c Note: only 283 patients had their embryos transferred