Table 1.

Sample characteristics (N=440).^a

		Younger adults (<65 years) (n=236)	Older adults (≥65 years) (n=204)
Gender, n (%)
	Male	123 (52.1)	114 (55.9)
	Female	113 (47.9)	90 (44.1)
Age in years, mean (SD) range		41.78 (12.69) 18-64	69.44 (4.13)b65-85
Education level, n (%)
	Low	50 (21.2)	81 (40.1)b
	Middle	104 (44.1)	69 (34.2)c
	High	82 (34.7)	52 (25.7)
Internet use (hours per week), mean (SD) range		18.21 (11.72) 1-60	17.83 (11.59) 1-60
Medical knowledge about lung cancerd, mean (SD) range		2.88 (1.41) 1-6	2.66 (1.37) 1-7
Medical knowledge about RFAd, mean (SD) range		1.71 (1.06) 1-4	1.54 (0.94) 1-4

^aNot all figures add up to 100% due to missing data. Conditions stratified by age only significantly differed on education.

^bDiffers significantly from younger adults (P<.001).

^cDiffers significantly from younger adults (P=.04).

^dA higher score indicates more knowledge, ranging from 1 to 7. RFA: Radio Frequency Ablation.