Rectal diameter measured by transabdominal ultrasonography for monitoring treatment response in children with functional constipation

Table 2 Correlations of rectal diameter and anterior wall thickness to baseline variables (n = 44)

Variables	Baseline RD (cm)		Baseline AWT (cm)
	Spearman’s rho	P value	Spearman’s rho	P value
Age (months)	0.22	0.148	0.15	0.337
Weight (cm)	0.19	0.212	0.17	0.263
Height (cm)	0.23	0.139	0.18	0.25
Duration of FC (months)	0.35	0.021	0.25	0.107
Stool frequency at baseline (times per week)	-0.22	0.149	-0.07	0.672
Stool consistency at baseline (BSS 1-7)	-0.09	0.569	-0.01	0.925
Time last defecation to USG (hour)	0.09	0.616	0.003	0.987

AWT: Anterior wall thickness; FC: Functional constipation; RD: Rectal diameter; USG: Transabdominal ultrasonography.