Table 2 Erosion types and syndrome distributions
|  | Control group (n = 68) | Test group 1 (n = 71) | Test group 2 (n = 71) | P value | Statistical analysis |
|---|---|---|---|---|---|
Erosion type |  |  |  | 0.7485 | χ2 |
 Flat | 48 (33.57) | 49 (34.27) | 46 (32.17) |  |  |
 Bulge | 20 (29.85) | 22 (32.84) | 25 (37.31) |  |  |
Syndrome type |  |  |  | 0.1337 | χ2 |
 Syndrome of stagnation of liver-qi | 16 (39.02) | 13 (31.71) | 12 (29.27) |  |  |
 Syndrome of stagnant heat in liver and stomach | 12 (34.29) | 10 (28.57) | 13 (37.14) |  |  |
 Syndrome of spleen-stomach dampness-heat | 13 (28.26) | 17 (36.96) | 16 (34.78) |  |  |
 Syndrome of spleen-deficiency and qi-stagnation | 9 (17.65) | 20 (39.22) | 22 (43.14) |  |  |
 Syndrome of spleen and stomach deficiency-cold | 1 (5) | 11 (55) | 8 (40) |  |  |