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Table 1 Distribution (%) of selected baseline characteristics of basal cell carcinoma cases and non-cases among 63,912 white participants in the US Radiologic Technologists study

From: Cumulative solar ultraviolet radiation exposure and basal cell carcinoma of the skin in a nationwide US cohort using satellite and ground-based measures

CharacteristicNo BCCBCC
Person-years at risk
 1,082,775  
Age at entry, mean (SD)  
 38.81 (9.41)  
Age at exit, mean (SD)  
 55.75 (8.43)  
Total61,7612151
Sex
 Male12,651 (20.5)431 (20.0)
 Female49,110 (79.5)1720 (80.0)
Birth year
 < 19409787 (15.8)558 (25.9)
 1940–194921,060 (34.1)732 (34.0)
 1950+30,914 (50.1)861 (40.0)
Highest level of education
 Unknown9703 (15.7)228 (10.6)
 School241 (0.4)19 (0.9)
 Vocational/other2414 (3.9)80 (3.7)
 Two-year rad tech program29,224 (47.3)981 (45.6)
 College or graduate school20,179 (32.7)843 (39.2)
Smoking status
 Unknown smoking status141 (0.2)4 (0.2)
 Never smoker30,606 (49.6)1067 (49.6)
 Former smoker17,502 (28.3)678 (31.5)
 Current smoker13,144 (21.3)394 (18.3)
 Smoked, unknown if current smoker368 (0.6)8 (0.4)
Alcohol (drinks/week)
 Unknown910 (1.5)18 (0.8)
 Never drinker10,632 (17.2)342 (15.9)
 0–2.9934,751 (56.3)1154 (53.6)
 3–6.999051 (14.7)370 (17.2)
 ≥76417 (10.4)267 (12.4)