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. 2012 Jan 3;7(1):e26807. doi: 10.1371/journal.pone.0026807

Table 1. Differences in African ancestry estimates (%, mean±SD) among case-control samples.

Sample Asthmatics Non-asthmatics Difference (95% CI)a p-valueb
Case-control (Ca = 357/Co = 439) 82.0±14.0 77.8±18.1 4.2 (2.0-6.4) <0.0001
REACH (Ca = 183/Co = 146) 83.9±11.6 78.3±18.8 5.6 (2.2–8.9) 0.001
BASS (Ca = 174/Co = 293) 80.0±15.9 77.6±17.7 2.4 (0.0–5.6) 0.126
a

Mean difference between asthmatics and non-asthmatics.

b

t-test. Sample sizes in parenthesis.