Correlation between the different markers of cough severity on days 1 and 7
| Spearman correlation (95% CI) | ||||
|---|---|---|---|---|
| Log cough score (child recorded) (n=40) | Log cough score (parent recorded) | Log C2 | Log C5 | |
| C2, concentration of capsaicin that produced 2–4 coughs; C5, concentration of capsaicin that produced 5 or more coughs. | ||||
| Day 1 | ||||
| Log cough score (parent recorded) (n=40) | 0.81 (p=0.00001) (0.67 to 0.90) | |||
| Log C2 (n=29) | −0.23 ( 0.56 to 0.15) | −0.35 (−0.64 to 0.02) | ||
| Log C5 (n= 40) | −0.08 (−0.38 to 0.23) | −0.18 (−0.47 to 0.14) | 0.62 (p=0.00001) (0.32 to 0.81) | |
| Log cough frequency per 24 hours (n=40) | 0.32 (p=0.05) (0.01 to 0.57) | 0.32 (p=0.046) (0.01 to 0.58) | −0.5 (p=0.005) (−0.74 to −0.18) | −0.12 (−0.42 to 0.20) |
| Day 7 | ||||
| Log cough score (parent recorded) (n=37) | 0.79 (p=0.00001) (0.63 to 0.89) | |||
| Log C2 (n=23) | −0.301 (−0.6 to 0.07) | −0.38 (p=0.047) (−0.66 to −0.01) | ||
| Log C5 (n=37) | −0.14 (−0.44 to 0.20) | −0.223 (−0.51 to 0.11) | 0.87 (p=0.00001) (0.74 to 0.94) | |
| Log cough frequency per 24 hours (n=37) | 0.44 (p=0.01) (0.13 to 0.67) | 0.42 (p=0.02) (0.11 to 0.65) | −0.26 (−0.56 to 0.11) | 0.3 (−0.03 to 0.57) |