Table 5.

Numbers of cases and total participants (N cases/N total) in each combination of postlunch napping duration and night-time sleep duration

Postlunch napping duration	Night-time sleep duration
	<5 hours	5–6.9 hours	7–8.9 hours	≥9 hours
0 min	140/704	335/1780	341/2189	49/287
1–30 min	53/258	99/886	90/679	27/110
31–60 min	49/223	158/902	101/776	19/116
>60 min	48/212	118/601	114/844	48/173