Table 4.
Simple Mean Nocturnal Baseline Impedance Values Among All Groups
| Channel | ERD (n = 20) | NERD (n = 20) | RH (n = 20) | FH (n = 20) | HV (n = 20) |
|---|---|---|---|---|---|
| Simple MNBI at 17 cm | 2529 (2281-2947) | 2830 (2016-3424) | 2830 (2283-3159) | 2987 (2129-3736) | 2129 (2016-3424) |
| Simple MNBI at 15 cm | 2198 (1968-2492) | 2652 (1890-2882) | 2440 (2174-2778) | 2641 (1915-3344) | 2002 (1193-2121) |
| Simple MNBI at 9 cm | 2010 (1441-2010) | 1438 (1198-2027) | 2307 (2007-2721) | 2582 (2294-3710) | 2439 (2152-2984) |
| Simple MNBI at 7 cm | 1446 (1122-1964) | 1506 (1043-2174) | 2428 (2143-3249) | 3019 (2487-4048) | 2960 (2454-4055) |
| Simple MNBI at 5 cm | 992 (788-1598) | 1192 (854-2153) | 2543 (2150-3282) | 3127 (2491-3904) | 2751 (2269-2943) |
| Simple MNBI at 3 cm | 914 (580-1273) | 1276 (801-1797) | 2353 (2009-3565) | 2932 (2483-4175) | 2479 (2055-3167) |
ERD, erosive reflux disease; NERD, non-erosive reflux disease; RH, reflux hypersensitivity; FH, functional heartburn; HV, healthy volunteer; MNBI, mean nocturnal baseline impedance.
Value are given as median (interquartile range).