Table 2.

Histological parameters by smoking status at baseline

	Smoking status at baseline
Histological parameters at baseline	Non- smoker n=184	Active- smoker n=80	Two-sided p-value
Histopathological diagnosis, n(%)
Multifocal atrophic gastritis	43(23.4)	18(22.5)	0.878
Intestinal metaplasia	141(76.6)	62(77.5)
Histopathological score, mean (SD)	4.26(0.43)	4.33(0.44)	0.251
Total score of Intestinal metaplasia, mean (SD)	0.48(0.19)	0.54(0.22)	0.042
Density of H. pylori colonization, mean (SD)
Total	1.69(0.74)	1.75(0.67)	0.516
Antrum	1.58(0.78)	1.71(0.76)	0.186
Corpus	2.10(0.77)	1.88(0.72)	0.050
Polymorphonuclears, mean (SD)
Total	1.91(0.66)	1.97(0.58)	0.484
Antrum	1.87(0.71)	2.00(0.63)	0.165
Corpus	2.08(0.74)	1.78(0.87)	0.011
Mononuclears, mean (SD)
Total	1.93(0.26)	1.92(0.22)	0.740
Antrum	1.94(0.29)	1.93(0.23)	0.764
Corpus	1.93(0.35)	1.86(0.42)	0.230
Total inflammation, mean (SD)
Total	1.92(0.44)	1.95(0.37)	0.662
Antrum	1.91(0.47)	1.97(0.40)	0.334
Corpus	2.00(0.50)	1.83(0.59)	0.020
Intraepithelial lymphocytes, mean (SD)
Total	0.31(0.32)	0.37(0.37)	0.195
Antrum	0.36(0.39)	0.45(0.43)	0.112
Corpus	0.16(0.36)	0.10(0.28)	0.255
Mucus depletion, mean (SD)
Total	2.11(0.97)	2.13(0.92)	0.917
Antrum	2.11(1.02)	2.20(0.98)	0.511
Corpus	2.19(1.09)	1.87(1.14)	0.050
Lymphoid follicles, mean (SD)
Total	0.33(0.30)	0.33(0.31)	0.937
Antrum	0.37(0.36)	0.34(0.35)	0.598
Corpus	0.22(0.47)	0.22(0.43)	0.963
Regenerative activity, mean (SD)
Total	0.60(0.52)	0.66(0.53)	0.405
Antrum	0.68(0.59)	0.75(0.62)	0.358
Corpus	0.43(0.63)	0.32(0.61)	0.204

Abbreviation: SD: Standard deviation