Table 2.

Mean, SD and range of CBCL total, internalising and externalising scales at 4 years of age according to excessive crying at the age of 3 months

CBCL scales	Crying babies			Non-crying babies			p Value*
	Mean	SD	Range	Mean	SD	Range
Total CBCL	39.5	18.7	1–135	34.0	15.8	5–132	<0.001
Internalising problems	7.6	5.7	0–43	6.1	4.4	0–32	<0.001
Externalising problems	17.0	7.9	1–46	15.3	7.0	1–52	<0.001

*Student t test.

CBCL, Child Behavior Checklist.