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Table 1 Mean (SD) values for the primary and secondary outcomes at each assessment during the baseline and intervention periods

From: Environmental enrichment intervention for Rett syndrome: an individually randomised stepped wedge trial

Outcome

Baseline period

Intervention period

Assessment 1

Assessment 2

Assessment 3

Assessment 4

Assessment 5

N

Mean (SD)

N

Mean (SD)

N

Mean (SD)

N

Mean (SD)

N

Mean (SD)

Rett Syndrome Gross Motor Scale (/45)

12

22.7 (9.6)

12

22.4 (10.4)

12

25.5 (8.9)

12

27.6 (8.4)

12

29.8 (9.7)

Blood Brain Derived Neurotrophic Factor (ng/ml)

11

165.0 (28.8)

12

146.1 (50.1)

–

–

–

–

10

510.0 (104.2)

BMI

12

15.2 (1.4)

12

15.1 (1.5)

12

14.6 (1.0)

11

14.7 (1.5)

11

15.0 (1.6)

Sleep Disturbance Scale for Children (DIMS subscale, /35)*

12

15.8 (5.5)

12

16 (6.1)

12

15.6 (4.3)

11

15.4 (7.2)

11

14.4 (5.6)

Rett Syndrome Behaviour Questionnaire (Mood subscale, /16)*

12

8.6 (3.6)

12

7 (3.6)

12

7.6 (3.6)

11

7.3 (3.0)

11

8.7 (3.5)

  1. *One child unwell at assessment 4 and another at assessment 5