Table 2.

Standardized colon size ratios presented as median (interquartile range) for the whole group and per age group

	Overall (n = 119)	<1 year (n = 25)	1 year (n = 36)	2 years (n = 40)	3 years (n = 10)	4 years (n = 4)	5 years (n = 4)	P-value3
Rectosigmoid length/L2 (n = 117)	10.18 (8.21–12.11)	9.81 (7.98–11.70)	9.75 (8.08–11.84)	10.24 (8.49–12.49)	11.23 (9.00–12.11)	10.27 (8.77–12.36)	9.59 (8.53–11.41)	0.31
	7.17, 13.881
	10.50 (±3.15)2
Descending colon length/L2 (n = 111)	5.03 (4.27–6.01)	4.63 (4.06–5.42)	5.40 (4.27–6.01)	4.86 (4.51–5.63)	5.38 (4.96–6.62)	6.80 (5.77–7.86)	5.95 (4.94–6.81)	0.05
	3.83, 6.731
	5.28 (±1.42)2
Rectum diameter/L2 (n = 118)	1.53 (1.32–1.74)	1.27 (1.13–1.39)	1.50 (1.39–1.65)	1.56 (1.42–1.79)	1.74 (1.67–1.82)	1.75 (1.68–2.09)	1.75 (1.45–1.81)	<.001
	1.17, 1.841
	1.52 (±0.27)2
Sigmoid colon diameter/L2 (n = 118)	1.06 (0.96–1.22)	1.05 (0.98–1.10)	1.09 (0.97–1.23)	1.05 (0.93–1.32)	1.03 (0.94–1.2)	1.36 (1.19–1.52)	1.08 (0.99–1.28)	0.46
	0.85, 1.421
	1.10 (±0.21)2
Descending colon diameter/L2 (n = 119)	1.13 (1.01–1.29)	1.15 (1.04–1.29)	1.13 (1.03–1.27)	1.10 (0.95–1.32)	1.22 (1.01–1.3)	1.24 (1.17–1.31)	1.10 (0.97–1.22)	0.85
	0.90, 1.471
	1.17 (±0.24)2
Transverse colon diameter/L2 (n = 113)	1.33 (1.22–1.48)	1.33 (1.18–1.51)	1.30 (1.20–1.44)	1.33 (1.22–1.52)	1.31 (1.22–1.42)	1.71 (1.58–1.87)	1.31 (0.89–1.41)	0.46
	1.11, 1.691
	1.36 (±0.22)2
Ascending colon diameter/L2 (n = 111)	1.47 (1.31–1.6)	1.33 (1.22–1.5)	1.46 (1.32–1.59)	1.53 (1.35–1.65)	1.46 (1.27–1.58)	1.58 (1.45–1.86)	1.57 (1.50–1.71)	0.008
	1.17, 1.811
	1.48 (±0.26)2

¹ 10th and 90th percentiles

² mean (±standard deviation)

³ P-values less than 0.05 were considered statistically significant

L2 width vertebral body L2