Predictors Hypothyroid Total % positive OR (CI) P value
Yes No        
Race         1.29(0.74-2.22) 0.349
Black 20 243 263 7.6 1.21(0.82-1.78)  
White 49 770 819 6 0.934(0.801.09)  
Gender         1.90(1.17–3.09) 0.008*
Female 32 309 341 9.4 1.50(1.14–1.98)  
Male 40 735 775 5.2 0.79 (0.64-0.97)  
Patient status         1.76(1.09–2.86) 0.02*
Alive 42 462 504 8.3 1.32(1.07–1.62)  
Dead 30 582 612 4.9 0.75(0.57–0.99)  
Family History         0.67(0.38–1.21) 0.181
No 35 509 544 6.4 0.89(0.72–1.08)  
Yes 19 186 205 9.3 1.32(0.89–1.93)  
Tobacco History         0.77(0.43–1.38) 0.38
Current/previous  43 621 664 6.5    
Never used 17 189 206 8.3    
Mean Age at Diagnosis (SD) 60.93 (10.66) 59.59(12.19)       0.363
Table 1: Descriptive and univariate statistics for possible predictors of hypothyroidism in cancer after external beam radiation.