Developmental outcomes for survivors of placental laser photocoagulation for the management of twin-to-twin transfusion syndrome

Table 3 Mean scores on the Child Behaviour Checklist (CBCL) for the TTTS and laser surgery cohort compared to two local control samples

	TTTS	Control 1^a	Control 2^a	TTTS	Control 1	Control 2
	Boys 6–13 n = 23	Boys 7 n = 333	Boys 6–11 n = 300	Girls 6–13 n = 18	Girls 7 n = 231	Girls 6–11 n = 300
CBCL domain	Mean [SD]	Mean [SD]	Mean [SD]	Mean [SD]	Mean [SD]	Mean [SD]
Activities	9.1 [3.2]	6.9 [2.1]	7.6 [2.0]	9.5 [3.2]	7.3 [2.0]	8.3 [1.8]
Social	7.6 [2.9]	5.9 [1.7]	6.5 [1.9]	6.0 [2.7]	6.0 [1.7]	6.3 [1.8]
School	4.7 [1.0]	5.0 [0.8]	4.0 [0.9]	4.0 [1.4]	5.1 [0.7]	5.3 [0.8]
Competence	21.3 [6.0]	17.9 [3.2]	18.6 [3.3]	19.5 [5.3]	18.4 [3.1]	20.0 [3.1]
Internalizing	8.9 [9.4]	6.4 [5.3]	8.5 [6.3]	8.8 [7.9]	7.6 [6.3]	9.0 [5.5]
Externalizing	10.2 [12.3]	9.3 [6.6]	12.4 [7.5]	5.1 [7.5]	7.3 [6.3]	10.4 [6.2]
Problems	37.7 [39.7]	24.6 [15.4]	32.4 [17.7]	27.9 [27.1]	23.2 [17.0]	30.6 [15.0]

^aControl group 1 was randomly sampled from schools in metropolitan Melbourne, Australia, and excluded children seen by a psychologist or psychiatrist in the previous year [30]. Approximately half of the sample had asthma. Control group 2 was a non-selected normative sample from Sydney, Australia [29]

ISSN: 1471-2393