Table 1.

Clinical characteristics of the study population and count of total coliforms bacteria

	Colicky infants (n = 45)	Controls (n = 42)	p-value
Gender (M/F)	25/20	24/18	1.000**
Age at recruitment (days)	42 (15-95)	39 (17-98)	0.788*
Type of delivery (spontaneous/caesarean)	27/18	23/19	0.668**
Birth weight (grams)	3300 (2550-3970)	3350 (2520-4010)	0.951*
Crying time (minutes per day)	225 (185-310)	105 (60-135)	0.000*
Average count of total coliform bacteria (log10 CFU/g of faeces)	5.98 (2.00-8.76)	3.90 (2.50-7.10)	0.015*

Data are expressed as median (range) or numbers.

*Mann-Whitney Test.

**Fisher's Exact Test