Table 4.

Demographic variables for high and low SEP groups.

Variable	Child: Low SEP Adult: Low SEP	Child: Low SEP Adult: High SEP	Child: High SEP Adult: Low SEP	Child: High SEP Adult: High SEP
N	227	141	88	198
% Female	62.32	58.14	55.00	52.49
Mean Birthyear (SD)	1923.45 (8.78)	1929.85 (9.86)	1925.60 (11.19)	1929.07 (10.81)
Mean Intake Age (SD)	64.50 (7.49)	59.86 (7.41)	62.86 (9.38)	60.87 (8.03)
Mean # IPTs (SD)	3.44 (2.22)	4.46 (2.42)	3.73 (2.38)	4.64 (2.39)
Mean Follow-up (SD)	14.17 (7.88)	15.95 (7.76)	15.01 (8.17)	16.75 (7.76)