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. Author manuscript; available in PMC: 2022 Aug 16.
Published in final edited form as: Neurogastroenterol Motil. 2020 Oct 23;33(6):e14009. doi: 10.1111/nmo.14009

TABLE 1.

Clinical characteristics by HRM system.

Medtronic n = 294 Laborie n = 126 Diversatek n = 64 P value
World regions
 Asia 68 (23.1%) 69 (54.8%) 39 (60.9%) <0.001
 Europe 43 (14.6%) 57 (45.2%)
 Latin America 64 (21.8%) 25 (39.1%)
 North America 119 (40.5%)
Age (y) 27.7 (24.0–34.9) 26.0 (22.8–37.0) 30.0 (28.0–35.8) <0.001
Gender (% female) 147 (50.0%) 88 (69.8%) 37 (57.8%) 0.001
EGJ morphology
 Type 1 288 (98.0%) 122 (96.8%) 60 (93.8%) 0.19
 Type 2 6 (2.0%) 4 (3.2%) 4 (6.3%)
EGJ-CI (mmHg.cm) 37.0 (23.6–53.7) 56.5 (35.0–75.3) 34.9 (22.1–56.1) <0.001
Basal LESP (mmHg) 22.5 (16.3–30.3) 29.0 (21.8–44.0) 27.1 (20.2–35.7) 0.002
End-expiratory LESP (mmHg) 13.7 (8.1–20.5) 14.0 (8.0–21.0) 9.8 (5.5–14.9) <0.001
LES length (cm) 3.7 (3.2–4.2) 3.0 (2.6–3.5) 3.0 (2.2–3.5) <0.001

Values expressed as median (interquartile range) or number (%).

Abbreviations: EGJ, esophagogastric junction; EGJ-CI, EGJ contractile integral; HRM, high-resolution manometry; LES, lower esophageal sphincter; LESP, LES pressure.