Table 1.

Case numbers and sex ratios in each model.

Model		Cases, n (%)		Males, n (%)
MRD1a
	Total	822 (100.0)	154 (18.7)
	Training group	740 (90.0)	142 (19.2)
	Test group	82 (10.0)	12 (14.6)
MRD2b
	Total	822 (100.0)	154 (18.7%)
	Training group	740 (90.0)	142 (9.2%)
	Test group	82 (10.0)	12 (14.6%)
LFc
	Total	685 (100.0)d	122 (17.8)
	Training group	617 (90.0)	113 (8.3)
	Test group	68 (10.0)	9 (13.2)

^aMRD1: marginal reflex distance 1.

^bMRD2: marginal reflex distance 2.

^cLF: levator muscle function.

^dIn the LF model, 137 normalized eye photographs were excluded because the up- and down-gaze orbital photographs were not well merged.