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Table 1 Demographic characteristics, mean body mass index, and GERD symptoms among 3 comparison groups

From: Barrett’s esophagus and the risk of obstructive sleep apnea: a case–control study

  BE (n = 54) EGD (n = 62) P value (BE vs. EGD) COL (n = 171) P value (BE vs. COL)
Mean age, years (SD) 63 (11.1) 60 (11.7) NS 57 (13.6) 0.001*
White (%) 53 (98.2) 59 (95.2) NS 70 (41.9)† <0.0001¥
Male (%) 38 (70.4) 36 (58.1) NS 75 (43.9) 0.001°
Mean BMI, kg/m2 (SD) 30 (5.9) 27 (5.5) 0.03* 28 (5.6) 0.06*
Heartburn symptoms (%) 43 (79.6) 33 (53.2) 0.003° 53 (31.0) < 0.0001°
Nocturnal heartburn symptoms (%) 27 (50.0) 16 (25.8) 0.01° 21 (12.3) <0.0001°
Regurgitation symptoms (%) 42 (77.7) 38 (61.3) 0.06° 41 (24.0) <0.0001°
Nocturnal regurgitation symptoms (%) 31 (57.4) 18 (29.0) 0.002° 18 (10.5) <0.0001°
  1. SD, Standard deviation
  2. NS, Not significant
  3. BMI, Body mass index
  4. * Independent samples t test with equal variances
  5. ° Chi-square test
  6. †Among respondents; 4 subjects did not respond to the question about race.
  7. ¥ Fisher’s exact test