Micro-aspiration | Pharyngeal contamination supine | Pharyngeal contamination upright | |
Subjects n | 243 | 230 | 298 |
Sex, female % | 67 | 69 | 61 |
Age years, median (range) | 62 (17–88) | 61 (14–88) | 59 (16–87) |
BMI kg·m−2, mean±sd | 27.1±3.93 | 27.9±4.01 | 27.3±2.82 |
PPI use %# | 68 | 66 | 66 |
Prokinetic or laxative use % | 5 | 4 | 4 |
BMI: body mass index; PPI: proton pump inhibitor. #: appropriateness of prescription could not be assessed as vast majority presented on PPI therapy.