Figure 6: Generalized multidimensional reduction analysis showing best prediction model with association to lung cancer risk, high-risk cells are represented by dark shading and low-risk cell are represented by light shading. (a) Single-factor model of GSTT1 for lung cancer risk. (b) Two factor model of XPD751Gln and IL-1β to increased risk of lung cancer. (c) Three-factor model of XRCC1399Gln, XPD751Gln, and IL-1RN with risk to lung cancer