Table 1 Characteristics of participants.

From: Daytime nap controls toddlers’ nighttime sleep

Gestational age at birth (weeks), mean ± s.d.

39.5 ± 1.2

Birth weight (g), mean ± s.d.

3092.5 ± 364.7

No. of toddlers (boys: girls)

50 (32:18)

Maternal age at birth, mean ± s.d.

35.3 ± 3.9

Birth order

 First born

35

 Subsequent born

15

Months of age at actigraph recording, mean ± s.d.

19.1 ± 1.2

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