The Development of Circadian Rhythms in Human Infants

Only 2 families (6%) were resident in a flat, the rest lived in houses of various types.
6 (17%) of houses were detached properties, 17 (49%) semi detached, 10 (29%) were
terraced houses. 69% of all housing (24/35) was owner occupied, leaving 11 (31%)
rental accommodation. 4 (11% of total) of these houses/flats were rented from the
council. 94% (33 properties) had full gas central heating.
The average pre tax total household income (SD) was £39 532 (£18K) with a range of
£10 000 to £80 000. Maternal income pre birth of baby was £17 772 (range £0 to £40
000) whereas paternal income averaged at £22 795 (range 0 to £60 000). All
participant mothers completed the questions related to finance.
The Corney score (SD) was 1.88 (1.67). It is a measure of the number of adverse life
events experienced by the families. The minimum score was 0/10 and the maximum
score was 6/10.
The average Edinburgh Postnatal Depression Score (SD) for the mothers was 5.32
(6.202); range 0 to 25. A score of 13/30 or greater indicates possible depression.
Three (8%) mothers required intervention or were clinically depressed. One mother
of three children, at the same time as coping with the birth of her newborn, had to
cope with the death of her older child during the family‟s participation in the study.
He had been ill with chronic illness and severe disability from birth. She elected to
continue in the study despite her bereavement. One mother had a history of depression
and was going through a possible separation with her husband. The third mother had
a significant number of adverse life events including unemployment, bereavement of
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