Table 2.

Bland-Altman agreement statistics for differences in corpora lutea counts made by ultrasound biomicroscopy (UBM) and histology (HIS)

CL size	Mean UBM counts	Mean HIS counts	Bias	95% CI for bias	95% Limits of agreement
<350 μm	0.9	1.2	−0.3	−0.9 to 0.4	−4.6 to 4.1
350–699 μm	13.3	25.0	−11.7	−13.7 to −9.7	−25.5 to 2.1
≥700 μm	8.5	0.3	8.2	7.2 to 9.3	1.3 to 15.2
All sizes	22.8	26.6	−3.8	−5.5 to −1.9	−16.2 to 8.7