Table 1– Findings of physical examination at initial presentation
VariableAge <65 yrsAge ≥65 yrsp-value
Subjects n40833720
Positive auscultation2929 (72.9)2936 (80.3)<0.001
Cough3811 (93.4)3285 (88.8)<0.001
Purulent sputum2340 (57.5)1985 (53.7)0.001
Fever2508 (61.4)2015 (54.2)<0.001
Dyspnoea2805 (69.2)2950 (80.2)<0.001
Confusion206 (5.1)638 (17.4)<0.001
Chest pain1967 (49.0)1110 (31.9)<0.001
Pleural effusion476 (12.2)602 (16.9)<0.001
Low blood pressure#693 (17.3)754 (20.5)<0.001
Tachycardia1189 (29.6)1171 (31.9)0.028
Tachypnoea+294 (8.0)430 (12.7)<0.001
  • Data are presented as n (%), unless otherwise stated. #: systolic blood pressure <90 mmHg or diastolic blood pressure ≤60 mmHg; : heart rate >100 beats·min−1; +: respiratory rate ≥30 breaths·min−1.