Table 5.

Results of linear regression models assessing the effects of infant group and other independent variables on change scores

Outcome	Independent variable	Unadjusted effect Coefficient (95% CI)	P Value	Adjusted effect Coefficient (95% CI)	P Value
Crying
	Infant subgroup		<0.001		<0.001
	IFCIDS	2.6 (reference)		2.5 (reference)
	Colic minus IFCIDS	1.9 (1.0 to 2.9)		2.4 (1.1 to 3.6)
	IISMO minus IFCIDS	1.8 (0.7 to 2.8)		1.5 (0.3 to 2.7)
	Age	0.04 (−0.06 to 0.1)	0.41	0.09 (−0.02 to 0.2)	0.10
	Birth Weight	−0.16 (−0.8 to 0.7)	0.63	−0.3 (−0.9 to 0.3)	0.36
	Number of treatments	−0.78 (−0.23 to 0.7)	0.32	0.10 (−0.07 to 0.28)	0.23
	Gender
	Female	4.2 (reference)	0.86	3.1 (reference)	0.98
	Male	−0.07 (−0.8 to 0.7)		−0.06 (−0.8 to 0.7)
	Refer by health care practitioner
	No	3.8 (reference)	0.17	3.0 (reference)	0.20
	Yes	0.5 (−0.2 to 1.3)		0.5 (−0.3 to 1.3)
	Allergy/Asthma in family
	No	4.0 (reference)	0.37	3.6 (reference)	0.50
	Yes	0.3 (−0.4 to 1.1)		0.3 (−0.6 to 1.2)
Sleep
	Infant subgroup		<0.05		<0.001
	IFCIDS	2.2 (reference)		1.5 (reference)
	Colic minus IFCIDS	1.4 (0.1 to 2.7)		2.7 (1.5to 4.0)
	IISMO minus IFCIDS	2.2 (0.8 to 3.6)		2.5 (1.3 to 4.6)
	Age	0.03 (−0.1 to 0.2)	0.44	0.02 (−0.1 to 0.2)	0.75
	Birth Weight	−0.7 (−1.5 to 0.2)	0.12	−0.7 (−1.5 to 0.2)	0.12
	Number of treatments	0.18 (−0.04 to 0.37)	0.06	0.35 (0.13 to 0.56)	0.002
	Gender
	Female	3.5 (reference)	0.56	3.6 (reference)	0.42
	Male	0.3 (−0.7 to 1.3)		0.3 (−0.5 to 1.1)
	Refer by health care practitioner
	No	3.1 (reference)	0.06	3.0 (reference)	0.26
	Yes	1.0 (−0.04 to 2.0)		0.2 (−0.3 to 1.3)
	Allergy/Asthma in family
	No	3.6 (reference)	0.87	3.1 (reference)	0.66
	Yes	0.1 (−0.9 to 1.1)		0.2 (−0.7 to 1.1)
Stress
	Infant subgroup		0.11		0.03
	IFCIDS	3.1 (reference)		3.1 (reference)
	Colic minus IFCIDS	1.1 (0.03 to 2.1)		1.7 (0.6 to 2.9)
	IISMO minus IFCIDS	0.5 (−0.6 to 1.7)		0.3 (−0.8 to 1.4)
	Age	−0.02 (−0.1 to 0.1)	0.65	−0.007 (−0.1 to 0.1)	0.89
	Birth Weight	−0.2 (−0.9 to 0.5)	0.50	−0.13 (−0.8 to 0.5)	0.69
	Number of treatments	−0.02 (−0.19 to 0.14)	0.80	0.18 (−0.02 to 0.38)	0.07
	Gender
	Female	3.8 (reference)	0.77	3.8 (reference)	0.90
	Male	0.1 (−0.7 to 0.9)		−0.04 (−0.8 to 0.7)
	Refer by health care practitioner
	No	3.3 (reference)	0.02	3.3(reference)	0.39
	Yes	0.9 (0.1 to 1.7)		0.3 (−0.4 to 0.7)
	Allergy/Asthma in family
	No	3.7 (reference)	0.64	3.4 (reference)	0.66
	Yes	0.2 (−0.6 to 1.0)		0.2 (−0.7 to 1.0)
Consolability
	Infant subgroup		<0.001		<0.001
	IFCIDS	3.0 (reference)		2.8 (reference)
	Colic minus IFCIDS	2.0 (1.0 to 3.0)		2.7 (1.6 to 3.7)
	IISMO minus IFCIDS	0.2 (−0.9 to 1.3)		0.4 (−0.6 to 1.4)
	Age	−0.07 (−0.2 to 0.04)	0.19	0.03 (−0.07 to 0.1)	0.60
	Birth Weight	0.2 (−0.4 to 0.9)	0.48	0.06 (−0.5 to 0.7)	0.85
	Number of treatments	−0.15 (−0.3 to 0.02)	0.07	0.15 (−0.03 to 0.34)	0.10
	Gender
	Female	4.4 (reference)	0.20	3.9 (reference)	0.53
	Male	−0.5(−1.3 to 0.3)		−0.2 (−0.9 to 0.5)
	Refer by health care practitioner
	No	3.7 (reference)	0.07	3.7 (reference)	0.34
	Yes	0.7 (−0.06 to 1.6)		0.3 (−0.4 to 1.0)
	Allergy/Asthma in family
	No	4.1 (reference)	0.64	3.6 (reference)	0.90
	Yes	0.2 (−0.6 to 1.0)		0.06 (−0.7 to 0.8)