ANOVA	Analysis of variance
AUC	Area under the receiver operating characteristic curve
BMI	Body mass index
BMP-15	Bone morphogenetic protein-15
CCA	Canonical correspondence analysis
CI	Confidence interval
EDF	Estimated degrees of freedom
ELISA	Enzyme-linked immunosorbent assay
E2	Estradiol
FF	Follicular fluid
FSH	Follicle-stimulating hormone
GAM	Generalized additive model
GDF-9	Growth differentiation factor-9
HA	Hyaluronic acid
Intercept (Constant)	Baseline odds at mean predictor levels in logistic regression
IU	International unit
MII	Metaphase II oocyte
OR	Odds ratio
PCA	Principal component analysis
PC1/PC2	Principal component 1/2
R2	proportion of variance explained Pseudo-R2 (CCA): proportion of constrained inertia/total inertia Adjusted R2 (CCA): bias-corrected explained variance (vegan::RsquareAdj)
Ref.df	Reference degrees of freedom (for GAM smooth terms)
ROC	Receiver operating characteristic
SD	Standard deviation
Slope	Linear thinning rate of the zona pellucida across time-lapse
Syn4	Syndecan-4
ZP	Zona pellucida
Δrel	Relative thinning ratio of the zona pellucida