Table 1.

Sample size, mean age, and participation rates by age and gender.

Age group	All		Men		Women
	N	Mean age (years) (SD)	N	Participation rate (%)	N	Participation rate (%)
45–49	792	48.0 (1.1)	398	83.2	394	82.2
50–54	1014	52.5 (1.5)	515	85.4	499	81.8
55–59	975	57.5 (1.4)	507	82.9	468	79.6
60–64	959	62.5 (1.4)	479	81.9	480	78.4
65–69	574	66.5 (0.8)	299	82.3	275	77.9
70–74	1756	72.5 (1.4)	833	72.5	923	63.1
75–79	1548	77.0 (1.4)	610	76.4	938	71.2
80–84	784	82.4 (1.4)	291	78.3	493	73.8
85–89	494	87.0 (1.4)	168	84.8	326	79.6
90+	2411	93.1 (0.7)	625	69.8	1786	61.7
All	11,307	72.9 (14.8)	4725	78.1	6582	70.2