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Table 1 Number of subjects for each indicator variable (primary efficacy set N = 7434)

From: Classification of adults suffering from typical gastroesophageal reflux disease symptoms: contribution of latent class analysis in a European observational study

 

n (%)

S1: daytime heartburn

6319 (85.0)

S2: daytime regurgitation

5217 (70.2)

S3: nighttime heartburn and/or nighttime regurgitation

4540 (61.1)

S4: nausea, eructation

3852 (51.8)

S5: slow digestion, early satiety

2758 (37.1)

S6: epigastralgia

3154 (42.4)

S7: dysphagia, vomiting

1169 (15.7)

S8: digestive bleeding, anemia*

124 (1.7)

S9: thoracic manifestations (atypical precordial pain)

1125 (15.1)

S10: respiratory disturbances (cough)

1522 (20.5)

S11: ENT symptoms (hoarseness, pharyngeal pain, globus, etc.)

1783 (24.0)

S12: early awakening, difficulty falling asleep

2003 (26.9)

S13: nocturnal awakening, nightmares

2799 (37.7)

  1. n = number of subjects with observations.
  2. ENT = ears, nose, throat.
  3. *Indicator variable S8 (digestive bleeding, anemia) was not included in the latent class analysis.