Reference | Sample size <50 | Population source not reported | Patients referred for suspected GORD | pH Monitoring for <24 hours | ATS criteria for asthma diagnosis not satisfied | Prevalence of abnormal oesophageal acid exposure in patients with asthma (%) |
Perrin-Fayolle et al 198037 | ✓ | 138/150 (92.0) | ||||
Perpina et al 198350 | ✓ | ✓ | ✓ | 9/26 (34.6) | ||
Ducolone et al 198751 | ✓ | ✓ | ✓ | 11/21 (52.4) | ||
Ekstrom and Tibbling 198852 | ✓ | ✓ | 18/37 (48.6) | |||
Nagel et al 198853 | ✓ | ✓ | 15/44 (34.1) | |||
Guidicelli et al 199054 | ✓ | 76/121 (62.8) | ||||
DeMeester et al 199055 | ✓ | 54/77 (70.1) | ||||
Larrain et al 199156 | ✓ | ✓ | 94/142 (66.2) | |||
Herve et al 199357 | ✓ | 41/53 (77.4) | ||||
Gastal et al 199458 | ✓ | ✓ | 12/25 (48.0) | |||
Schnatz et al 199659 | ✓ | ✓ | 42/54 (77.8) | |||
Suh et al 199760 | ✓ | ✓ | 11/42 (26.2) | |||
Campo et al 199761 | ✓ | ✓ | 14/17 (82.4) | |||
Dal Negro et al 199962 | ✓ | 30/37 (81.1) | ||||
Harding et al 199939 | ✓ | 128/199 (64.3) | ||||
Garcia-Compean et al 200063 | ✓ | 34/57 (59.6) | ||||
Harding et al 200041 | ✓ | ✓ | 16/26 (61.5) | |||
Heaney et al 200343 | ✓ | 31/54 (57.4) | ||||
Oldigs 200464 | ✓ | ✓ | 39/63 (61.9) | |||
Paleev et al 200565 | ✓ | ✓ | 17/37 (45.9) | |||
Hsu et al 200566 | ✓ | ✓ | 29/56 (51.8) | |||
Sami et al 200667 | ✓ | ✓ | 25/50 (50.0) | |||
Wong et al 200668 | ✓ | 17/30 (56.7) |
ATS, American Thoracic Society; GORD, gastro-oesophageal reflux disease.