TABLE 4.
Comparison of cough among the three study groups
| Characteristic | Control | AD | DLB | p-value | p1-value |
| Patients n | 22 | 30 | 19 | ||
| Sex (M/F) n/n | 14/8 | 9/21 | 9/10 | ||
| C2 log g·L−1 | 0.73±0.44 | 0.89±0.44 | 1.22±0.52 | 0.003 | 0.002 |
| C5 log g·L−1 | 0.89±0.49 | 1.07±0.39 | 1.46±0.49 | 0.001 | 0.0004 |
| Cu log g·L−1 | 0.24±0.45 | 0.36±0.37 | 0.67±0.52 | 0.008 | 0.004 |
| UTC slope | 1.23±0.70 | 1.02±0.78 | 0.75±0.40 | 0.083 | 0.116 |
Data are presented as mean±sd and were analysed using one-way ANOVA (p-values) or using two-way ANOVA when adjusting for gender (p1-values). Values in bold show where significant differences were expressed (p<0.05 or p1<0.05). AD: Alzheimer's disease; DLB: dementia with Lewy bodies; Cx: lowest concentration of inhaled citric acid that could induce ≥x coughs; Cu: concentration of citric acid at a threshold of UTC; UTC: urge-to-cough.