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. 2012 Nov 5;345:e6664. doi: 10.1136/bmj.e6664

Table 5.

 Global measure of parents’ perception of child’s sleep quality in study of effect of melatonin on sleep problems in children with neurodevelopmental disorders. Figures are means (SD)

Melatonin (n=52) Placebo (n=55) Adjusted difference (95% CI)
Baseline Week 12 Change Baseline Week 12 Change
Mean % of dissatisfied night sleeps 31.3 (34.3) 24.0 (33.2) −7.3 (35.5) 33.7 (35.3) 31.0 (36.3) −2.7 (36.9) −5.9 (−17.8 to 6.1)
Mean scores 3.8 (1.2) 3.4 (1.4) −0.4 (1.4) 4.0 (1.3) 3.7 (1.2) −0.3 (1.4) −0.2 (−0.7 to 0.2)