Table 2.

Baseline characteristics of study patients after 1:1 matching by age, sex, index year, and physician

	Thyroid cancer patients (%)	Non-cancer patients (%)
N	2787	2787
Age (mean, SD)	52.8 (14.8)	52.8 (14.8)
Age 18–30	8.2	8.2
Age 31–40	13.0	13.0
Age 41–50	22.4	22.4
Age 51–60	24.3	24.3
Age 61–70	18.3	18.3
Age 71–80	13.8	13.8
Gender: female	73.5	73.5
Gender: male	26.5	26.5