Description of the case-cohort data for the radiation and breast cancer study


Variable name		Description				Codes/range
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id			Subject ID				1-3372
tyr			Year start TB treatment			(19)12-54
dose			Estimated breast dose (Gy)		0-6.433
nof			Number of fluoroscopies			0-833
bc			Breast cancer diagnosis			0=No, 1=Yes
l2d			Base 2 logarithm (dose+1)		0-2.894
age.rx			Age at first TB treatment		0.09-65.55
age.out			Age at exit from cohort			8.31-93.23
age.in			Age at entry to cohort			2.34-65.80
subcoh			Sampled for subcohort			0=No, 1=Yes
incc			Included in case-cohort sample		TRUE/FALSE