Table 2. Characteristics of the Subjects in Each Group.
| Indicators | Group 1 (n = 60) | Group 2 (n = 60) | Group 3 (n = 60) | P* |
|---|---|---|---|---|
| Age (years) (mean, IQR) | 46 (34 - 52) | 48 (36 - 62) | 43 (37 - 62) | 0.945 |
| Male (n, %) | 39 (65.00) | 42 (70.00) | 38 (63.34) | 0.806 |
| Height (cm) | 174.07 ± 21.05 | 173.53 ± 15.64 | 174.08 ± 18.55 | 0.994 |
| Weight (kg) | 73.15 ± 8.01 | 75.08 ± 6.82 | 69.34 ± 5.49 | 0.226 |
| BMI (kg/m2) | 24.17 ± 3.15 | 24.93 ± 2.84 | 22.88 ± 2.04 | 0.145 |
| Smoking (n, %) | 29 (48.33) | 32 (53.33) | 27 (45.00) | 0.825 |
| Drinking (n, %) | 28 (46.67) | 27 (45.00) | 32 (53.33) | 0.746 |
| Types | - | 38 (63.33) | 34 (56.67) | 0.854 |
| Mild (%) | ||||
| Moderate/severe (%) | - | 22 (36.67) | 26 (43.33) | |
| Atrophy severity scores | - | 1.47 ± 0.34 | 1.58 ± 0.32 | 0.241 |
| Prognosis | - | < 0.001 | ||
| Yes (n, %) | 57 (95.00) | 39 (65.00) | ||
| No (n, %) | - | 3 (5.00) | 21 (35.00) |
Smoking status referred to suck at least one cigar per day and last more than 1 year, and smoking quit but less than 1 year was also included. Drinking status was definitive as weekly drinking more than three times. Group 1: control group with health subjects. Group 2: chronic atrophic gastritis (CAG) patients without H. pylori infection. Group 3: H. pylori-associated CAG patients. *χ2 test was used to compare the gender, smoking, drinking, types of CAG and prognosis of CAG in these three groups. The difference of age was compared by Mann-Whitney U-test, while one-way analysis of variance (ANOVA) was performed to compare the means of height, weight and BMI among these three groups. And the atrophy severity scores were determined between the groups 2 and 3 using the t-test. BMI: body mass index; IQR: interquartile distance.