Table 2.

Final validation model for prediction of the probability (p) of euploid blastocyst per mature (MII) oocyte.

Y = −2.728414 –0.138868 [I(spermSource=Ejaculate) – I(spermSource=Testicular_NOA)]       −0.13032 [I(spermSource=Testicular_NOA) – I(spermSource=NOA)]       +0.4928267[I(spermSource = Ejaculate) – I(spermSource=Testicular NOA)]       +0.0807783[I(Center = Anatolia) – I(Center = Androfert)]       +0.3765617[I(Center = GENERA) – I(Center = Anatolia)] Where the indicator function I(x) = 1 if x is TRUE and 0 otherwise. The probability p is $p=\left(\frac{1}{1+e^{-Y}}\right)$
Term	Estimate	Std error	Wald ChiSquare	Prob > ChiSquare	Lower 95%	Upper 95%
Intercept (a)	−2.728414	0.183	220.281	<0.0001	−3.088	−2.368
spermSource[Ejaculate-Testicular_NOA]:(ageFemale-39.414)	−0.138868	0.007	306.601	<0.0001	−0.154	−0.123
spermSource[Testicular_NOA-NOA]:(ageFemale-39.414)	−0.13032	0.027	22.471	<0.0001	−0.184	−0.076
spermSource[Ejaculate-Testicular NOA]	0.4928267	0.179	7.570	0.006	0.141	0.843
Center [Anatolia-Androfert]	0.0807783	0.105	0.591	0.441	−0.125	0.286
Center [GENERA-Anatolia]	0.3765617	0.068	30.010	<0.0001	0.241	0.511
Response: euploid blastocyst per MII oocytes			–LogLikelihood: 1527.242
Distribution: negative binomial			Number of Parameters: 6
Estimation method: adaptive Lasso			BIC: 3,098.065
Validation method: AICc			AICc: 3,066.544
Probability model link: Logit			Generalized RSquare: 0.258
Number of rows: 1,464			Area under the curve: 0.700

The full equation is written at the top of the table. Each particular characteristic is displayed with an associated P-value (Prob >ChiSquare) giving the indication of how much weight each variable will contribute to the probability of blastocyst euploidy per metaphase II oocytes.