Table 3.

Meta-analysis based on age and diagnosis of colic.

Outcome	No. of studies	P	OR [95% CI]	Heterogeneity
				χ 2	df	I 2 (%)	P-Q test
Age
Adult	2	0.05	1.63 [0.99, 2.67]	0	1	0	0.98
Children	5	0.01	2.89 [1.28, 6.50]	38.77	4	90	<0.00001
Diagnosis of colic
Medical history from parents	4	<0.00001	3.15 [2.52, 3.93]	38.77	3	92	<0.00001
Follow-up visting	2	0.03	1.99 [1.08, 3.66]	1.42	1	29	0.23
Medical history from patients	1	0.55	1.67 [0.31, 9.04]	NA	NA	NA	NA

OR: odds ratio and NA: not applicable.