Table 2.

Appearance of Pulmonary Crackles Classified by Low, Medium, and High Age-Groups

Age-Group (Years)P Value
Pulmonary CracklesLow (n=97)Medium (n=121)High (n=56)Low vs MediumLow vs HighMedium vs High
NS = nonsignificant.
Incidence, No. (%)11 (11)42 (34)39 (70)<.001<.001<.001
95% CI, %5–1827–4058–82
Location<.001<.05NS
    Unilateral, No. (%)10 (10)23 (19)20 (36)
    Bilateral, No. (%)1 (1)19 (16)19 (34)
Longitudinal extensionNSNSNS
    Grade 1, No. (%)9 (9)35 (29)34 (61)
    Grade 2, No. (%)2 (2)7 (6)5 (9)
Transverse extension
    Diffuse type, No. (%)01 (0.8)2 (4)NSNSNS