Hemosiderin in sputum macrophages may predict infective exacerbations of chronic obstructive pulmonary disease: a retrospective observational study

Table 1 Subject characteristics

Subject characteristics	Data
Number of Subjects	54
Average Age in Years	64.4 (±11.8)
Sex:
• Number of Male • Number of Females	34 (63%) 20 (37%)
FEV₁ % Predicted VC (L)	67.6% (±20.8) 3.37 (±0.92)
Active Smoking	46 (85%)
Cigarette Consumption:
• Few • Moderate • Many	19 (41.3%) 17 (37.0%) 10 (21.7%)
Number of Prior Infective Exacerbations:
• 0 • 1 • 2 • >2	29 (53.7%) 6 (11.1%) 14 (25.9%) 5 (9.3%)

Data are presented as mean ± SD or Number (%). FEV ₁ Forced expiratory volume in one second, VC Vital capacity

ISSN: 1471-2466