Table 3.
Characteristics of anxiety symptoms according to the Zung self-rating depression scale n (%)
| SDS | Normal | Mild to moderate | Severe | Extreme |
| Healthy, control | 80 (86) | 11 (13) | 8 (1) | 1 (0) |
| RE | 42 (31.34) | 43 (32.09) | 26 (19.40) | 23 (17.16) |
| NERD | 32 (22.07) | 38 (26.21) | 35 (24.14) | 40 (27.59) |
Compared with the healthy controls, the constituent ratios of the RE and the NERD groups presented a significant difference (χ2 = 35.14, 64.582; P < 0.001, 0.001, respectively). The results of the RE group were similar to those of the NERD group (χ2 = 6.556; P = 0.085). RE: Reflux esophagitis; NERD: Non-erosive reflux disease.