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Table 1 Population demographics of sample sets used in GWAS and replication stages of the study

From: Genome-wide association study identifies PERLD1 as asthma candidate gene

 

Discovery

Replication

Classificationa

Case

Control

Case

Control

Atopy Control

Age in years (Mean) b

18-28 (21.7)

18-30 (20.3)

Disease c

Asthma

No Asthma

Asthma

No Asthma

No Asthma

Atopy d

Yes

No

Yes

No

Yes

Number of samples

490

490

521

524

1445

Male Gender (%)

248 (50.4%)

132 (26.9%)

310 (59.5%)

158 (30.2%)

699 (48.4%)

  1. a) Classification of samples in study population; b) Range in age of participants with mean age in brackets; c) Disease status; d) Atopy status as derived from a skin prick test.