Table 1

 Clinical features and laboratory parameters in SARS and CAP patients on admission

Clinical featuresSARS group (n = 16)CAP group (n = 32)Matched odds ratio95% CI
Results are median (interquartile range) or number (%).
*p⩽0.01; **p<0.0001.
No. days between onset of illness and hospital admission4 (2–5)3 (2–3)1.200.82 to 1.77
Admission temperature (°C)38.8 (37.0–39.3)38.3 (37.8–38.7)1.210.69 to 2.17
Respiration (/min)26 (24–30)25 (24–26)1.090.91 to 1.32
Chills5 (31%)14 (44%)0.530.08 to 2.52
Cough11 (69%)25 (78%)0.650.14 to 2.98
Malaise3 (19%)9 (28%)0.620.10 to 2.90
Diarrhoea3 (19%)4 (13%)1.830.18 to 24.10
Household contact history**15 (94%)0 (0%)42.297.17 to +∞
Lymphocyte count (×109/l)1.7 (1.2–2.4)1.3 (0.8–2.4)1.380.75 to 2.67
Neutrophil count (×109/l)*2.6 (1.9–4.7)6.2 (3.9–8.8)0.640.41 to 0.87
LDH (IU/l)**430 (331–562)270 (223–290)1.021.01 to 1.03
CPK (IU/l)*83 (66–119)119 (76–233)0.980.97 to 0.99
APTT (sec)36 (34–39)36 (34–41)0.960.81 to 1.12
D-dimer (ng/ml)500 (500–717)799 (484–1165)1.001.00 to 1.00