Table 1 Summary of the pretreatment patient characteristics, clinical symptoms, treatments and lower oesophageal sphincter pressure in patients treated with intrasphincteric injection of botulinum toxin

Patients (n)

40

Mean age (range)

48.1 ± 17.3 (18–76)

Male/female

25/15

Body weight (kg)

74.0 ± 18.9

Number of procedures

48 (single 32, repeat 8)

Median symptom score (1–10)

8

Median regurgitation score (0–3)

2

Median dysphagia score (0–3)

3

Median chest pain score (0–3)

2

Mean lower oesophageal pressure (mmHg)

38.2 ± 11.1