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Table 4 Distribution of subjects by SDB severity and sleep onset difference categories

From: Retrospective cross-validation of automated sleep staging using electroocular recording in patients with and without sleep disordered breathing

n (%) ≤ 3 min 4 to 10 min 11 to 20 min > 20 min Total
Normal/Mild 22 (49) 12 (27) 7 (15) 4 (9) 45
Moderate/Severe 20 (48) 10 (24) 3 (7) 9 (21) 42
Total 42 (48) 22 (25) 10 (12) 13 (15) 87