Table 2.

Demographic information of those exposed to Facebook advertisements.

Age (years)	Cumulative campaign reach (N=91,835), n (%)			New members resulting from the campaign (N=863), n (%)
	Female	Male	Unknown	Female	Male	Unknown
65+	24,005 (26.14)	5766 (6.28)	163 (0.18)	307 (35.57)	66 (7.65)	3 (0.35)
55-64	31,401 (34.29)	6572 (7.16)	181 (0.20)	257 (29.78)	63 (7.30)	3 (0.35)
45-54	13,289 (14.47)	2397 (2.61)	62 (0.07)	111 (12.86)	14 (1.62)	0 (0.00)
35-44	4427 (4.82)	975 (1.06)	20 (0.02)	23 (2.67)	1 (0.12)	0 (0.00)
25-34	138 (1.50)	404 (0.44)	12 (0.01)	7 (0.81)	2 (0.23)	0 (0.00)
18-24	591 (0.64)	115 (0.13)	15 (0.01)	6 (0.70)	0 (0.00)	0 (0.00)
Unknown	0 (0.00)	0 (0.00)	69 (0.00)	0 (0.00)	0 (0.00)	0 (0.00)