Comparison of clinical features of exacerbations with (LspH) and without (NLspH) serological evidence of infection with Legionella spp.
| Variable | LspH | NLspH | p‐value between groups |
| Subjects n | 40 | 200 | |
| Increased dyspnoea (days before hospitalization) | 6.6±3.3 | 5.0±3.6 | ** |
| Exacerbation¶ | |||
| Type 1 | 24 (60) | 101 (50) | ns |
| Type 2 | 5 (12) | 36 (18) | ns |
| Type 3 | 11 (28) | 63 (32) | ns |
| Abrupt onset of exacerbation | 0 (0) | 58 (29) | # |
| Confusion | 3 (8) | 12 (6) | ns |
| Headache | 24 (60) | 100 (50) | ns |
| Myalgia/arthralgia | 22 (55) | 74 (37) | <0.03 |
| Nausea/vomiting | 6 (15) | 24 (12) | ns |
| Abdominal pain | 14 (35) | 50 (25) | ns |
| Diarrhoea | 4 (10) | 12 (6) | ns |
| Fever (at any stage of disease) | 27 (68) | 142 (71) | ns |
Data are presented as value±sd or value (%) unless otherwise stated
¶: in accordance with the classification of Anthonisen et al. 6
**: p<0.01
#: p<0.0001