Table 2.

Criteria for coding of the Diurnal Clocks.

	Definition of when a regulatory problem is present
Total sleep	< 12 h during the 24 h
Night sleep	< 5 h continuous sleep between 23–06. Awakenings of 15 min or less is not counted since discontinued sleep for feeding during the night is considered normal.
Difficult to soothe	≥ 2 h of continuous fuzziness and/or crying
Excessive crying	≥ 3 h of crying during the 24 h