Clinical indices at exacerbation by 11478G→A genotype in COPD; data expressed as mean (SD) or median (IQR)
| GG | GA/AA | p Value | |
| Exacerbation onset FEV1 (litres) | 1.09 (0.51) | 1.19 (0.56) | 0.37 |
| Fall in FEV1 at exacerbation (litres) | 0.11 (0.33) | 0.09 (0.59) | 0.74 |
| Exacerbation length (days) | 12.00 (7.00–17.00) | 13.50 (9.25–24.00) | 0.21 |
| TTNE (days) | 95.50 (41.75–221.00) | 117.00 (60.50–322.00) | 0.31 |
COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in 1 s; TNE, time to the next exacerbation.