highly significantp = 0.0014
In contrast, a highly significant excess of lung carcinomas (p = 0.0014, Fisher's exact Environmental Health Perspectives I 66 -=-.
In contrast, a highly significant excess of lung carcinomas (p = 0.0014, Fisher's exact Environmental Health Perspectives I 66 -=-.
There were no statistical- ly significant differences between the groups exposed to radon 1600 WLM and tobacco smoke 60 hr or 100 hr compared with rats exposed to radon 1000 WLM only, but there was a marginally significant difference between the group exposed to radon 1600 WLM and tobacco smoke 30 hr combined compared with the group exposed to radon 1600 WLM only (p = 0.0557, Fisher's exact test).