Fig. 2
From: Genome-wide association study of periodontal pocketing in Finnish adults
Manhattan and quantile–quantile plots showing GWAS results for the quantitative trait with three different adjustments. Manhattan (a, c, e) and quantile–quantile (b, d, f) plots related to the same adjustments are given side by side: a, b age, sex, and the first ten principal components. The genomic inflation factor lambda is 0.99 for NFBC66 and 1.01 for T2000 data. c, d: age, sex, smoking, and the first ten principal components. The genomic inflation factor lambda is 0.98 for NFBC66 and 0.99 for T2000 data. e, f age, sex, smoking, plaque, and the first ten principal components. The genomic inflation factor lambda is 0.98 for NFBC66 and 0.99 for T2000 data. Red lines indicate genome-wide signifcance level, p < 5 × 10–8