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. 2015 Apr 14;21(14):4302–4309. doi: 10.3748/wjg.v21.i14.4302

Table 1.

Patient demographics and clinical data (n = 379)

Healthy controls RE patients NERD patients
n 100 134 145
Gender (M/F)1 49/51 71/63 66/79
mean age (yr)2 40.04 ± 12.22 41.07 ± 10.61 39.68 ± 10.80
Age range (yr) 19-67 23-68 16-71
1

No significant differences were observed among the three groups with respect to age (F = 0.574; P = 0.564);

2

The constituent ratios of gender showed no significant differences among the three groups (χ2 = 1.554; P = 0.460). RE: Reflux esophagitis; NERD: Non-erosive reflux disease.