Table 3.
Univariable Analyses of Logistic Regression Models of Embryo Gradea by ATRA Concentrations.
| Tertile groups | Grade I | Grade II/III | Odds ratio (OR)b | OR (95% CI)c | P valued |
|---|---|---|---|---|---|
| ATRA, pmol/mL | |||||
| ≤3.62e | 17.2% (5/29) | 46.0% (17/37) | 1.0 | 1.0 | .027 |
| >3.62-5.81 | 31.0% (9/29) | 35.1% (13/37) | 2.35 | 1.78 (0.80-3.93) | |
| >5.81 | 51.7% (15/29) | 18.9% (7/37) | 7.29 | 3.08 (1.36-6.98) |
Abbreviations: ATRA, all-trans retinoic acid; CI, confidence interval; SEM, standard error of the mean.
a Grade I versus grade II/III.
b Independence model.
c Generalized estimating equations (GEEs) for clustered data model.
d Calculated from the GEE clustered data model.
e The first/lowest ATRA tertile (≤3.62 pmol/mL) is the reference level.