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

Table 3 Mean of rectal diameter and anterior wall thickness after 8 weeks of treatment

Variables	Mean (95%CI)	Mean change from baseline (95%CI)	P value
Rectal diameter (cm)
Baseline	2.70 (2.51-2.88)
Week 1	2.46 (2.30-2.62)	-0.24 (-0.45 to -0.03)	0.024
Week 4	2.45 (2.30-2.60)	-0.24 (-0.46 to -0.03)	0.025
Week 8	2.33 (2.18-2.48)	-0.37 (-0.59 to -0.14)	0.001
Anterior wall thickness (cm)
Baseline	0.29 (0.27-0.32)
Week 1	0.29 (0.27-0.31)	0.005 (-0.02-0.03)	0.740
Week 4	0.29 (0.27-0.30)	0.003 (-0.03-0.03)	0.865
Week 8	0.29 (0.26-0.30)	-0.004 (-0.03-0.02)	0.997