Table 1.

Morphometric results and histological findings of corpus mucosa

Variables	Atrophy grade (n = 943)				Spearman correlation
	0 (n = 672)	1 (n = 84)	2 (n = 88)	3 (n = 99)	r s	95% CI	P value
Foveolar length (mm)	0.29 (0.21, 0.39)	0.32 (0.24, 0.40)	0.38 (0.28, 0.47)	0.39 (0.30, 0.53)	0.231	0.168 to 0.292	<.001
Glandular length (mm)	0.55 (0.44, 0.68)	0.47 (0.35, 0.61)	0.38 (0.27, 0.49)	0.33 (0.26, 0.46)	−0.399	−0.453 to −0.342	<.001
Musculus mucosae thickness (mm)	0.08 (0.05, 0.12)	0.09 (0.05, 0.13)	0.10 (0.08, 0.16)	0.12 (0.08, 0.19)	0.224	0.161 to 0.286	<.001
Total mucosal thickness (mm)	0.95 (0.80, 1.12)	0.91 (0.76, 1.04)	0.92 (0.72, 1.09)	0.86 (0.70, 1.05)	−0.114	−0.178 to −0.048	<.001
Foveolar/foveolar and glandular length ratio	0.35 (0.28, 0.43)	0.40 (0.33, 0.50)	0.50 (0.39, 0.57)	0.54 (0.45, 0.62)	0.438	0.384 to 0.490	<.001
Inflammation grade	1 (1, 1)	2 (1, 2)	3 (2, 3)	3 (2, 3)	0.665	0.627 to 0.700	<.001
Activity grade	0 (0, 0)	0 (0, 1)	0 (0, 1)	0 (0, 1)	0.269	0.207 to 0.329	<.001
Metaplasia grade	0 (0, 0)	0 (0, 0)	0 (0, 0)	3 (0, 3)	0.600	0.556 to 0.641	<.001
Helicobacter pylori density	0 (0, 0)	0 (0, 0)	0 (0, 1)	0 (0, 0)	0.121	0.056 to 0.186	<.001

Data expressed as median and interquartile range (IQR). Four grades: 0 = none or minimal, 1 = mild, 2 = moderate, and 3 = severe.

The correlation coefficient (r_s) between the mucosal thickness or histological scores and atrophy degrees was calculated by Spearman rank correlation.

CI = confidence interval.