Table 3: Reflux symptom index among patients and controls.

PatientsControls 𝑃 value
mean ± SD mean ± SD

Hoarseness or a problem voice 0 . 8 7 ± 1 . 2 8 0 . 5 5 ± 0 . 8 5 0.346
Clearing of throat 1 . 0 8 ± 1 . 2 7 0 . 7 7 ± 0 . 9 9 0.314
Excess throat mucus or postnasal drip 0 . 7 1 ± 1 . 2 9 0 . 4 2 ± 0 . 8 5 0.550
Difficulty swallowing food, liquids, or pills 0 . 5 4 ± 1 . 0 2 0 . 2 6 ± 0 . 7 3 0.114
Coughing after you ate or lie down 0 . 4 4 ± 0 . 6 7 0 . 3 5 ± 0 . 6 6 0.522
Breathing difficulties or choking episodes 0 . 3 1 ± 0 . 6 7 0 . 1 3 ± 0 . 4 3 0.227
Troublesome or annoying cough 0 . 3 3 ± 0 . 8 3 0 . 1 6 ± 0 . 4 5 0.532
Sensations of something sticking throat or a lump in throat 0 . 7 3 ± 1 . 0 7 0 . 5 2 ± 0 . 9 3 0.280
Heartburn, chest pain, indigestion, or stomach acid coming up 1 . 3 5 ± 1 . 2 8 1 . 0 6 ± 1 . 3 7 0.255