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Table 1 The association between socio-demographic factors and obesity indices with GERD in study participants

From: Dietary habits and obesity indices in patients with gastro-esophageal reflux disease: a comparative cross-sectional study

Variable Total
N = 505
GERD
N = 285
Non- GERD
N = 220
P-value*
N % N % N %
Age (years)
  < 35 292 57.8 160 56.1 132 60 0.38
  ≥ 35 213 42.2 125 43.9 88 40
Gender
 Men 156 30.9 78 27.4 78 35.5 0.051
 Women 349 69.1 207 72.6 142 64.5
Marital status
 Single 123 24.4 59 20.7 64 29.1 0.02**
 Married 382 75.6 226 79.3 156 70.9
Education (years)
  < 12 years schooling 328 65 203 71.2 125 56.8 0.001**
  ≥ 12 years schooling 177 35 82 28.8 95 43.2
Job
 Unemployed 337 66.7 198 69.5 139 63.2 0.32
 Self-employed 97 19.2 51 17.9 46 20.9
 Employee 71 14.1 36 12.6 35 15.9
Smoking or substance abuse
 Yes 61 12.1 37 13.0 24 10.9 0.47
 No 444 87.9 248 87.0 196 89.1
Physical activity (hours/wk)
  < 2 451 89.3 262 91.9 189 85.9 0.03**
  ≥ 2 54 10.7 23 8.1 31 14.1
Concomitant diseases a
 Yes 165 32.7 111 38.9 54 24.5 0.001**
 No 340 67.3 174 61.1 166 75.5
BMI
  < 30 407 80.6 219 76.8 188 85.5 0.01**
  ≥ 30 98 19.4 66 23.2 32 14.5
WC (cm)
 Men <102; Women <88 272 53.9 131 46.0 141 64.1 <0.001**
 Men ≥102; Women ≥88 233 46.1 154 54.0 79 35.9
  1. BMI body mass index, WC waist circumference. aConcomitant diseases, including asthma, diabetes, hypertension, hyperlipidemia, chronic kidney disease and/or chronic artery disease. *p-values was derived from Chi-square test. **Significant at the level of p< 0.05