Table 2.

Comparing personal characteristics of phase I and study sampling frame members who were and were not screened for eligibility.

	phase I frame, not screened	screened	study frame, not screened	screened
N	2373	1620	18254	6451
% female	49.2	55.8***	53.3	62.3***
average age	56.6	57.6***	56.8	57.2***
% moderate PA 5+ days/wk	29.7(a)	23.7***	29.7(a)	25.1***
% vigorous PA 3+ days/wk	23.0(a)	29.9***	23.0(a)	27.3***
% active 2+ days/wk		74.8		82.7
% newly active		22.7		33.8
% full PA recovery		7.3		6.7
% partial PA recovery		0.9		1.8
% education ≥ BA	34(b)	48.9***
% employed	57(c)	68.7***
% non-Hispanic White	93(d)	93.1
% with spouse	71.4(e)	77.5***
% ≥ $50k / year income	61(f)	68.8***

^***p<.001

^(a)based on 2005 BRFSS data for Minnesota – ages 55–64. (Note: The NCHS website gives the 3d/vigorous breakout, and the “3d/vigorous OR 5d/moderate” total as 52.7% for age group 55–64. We derived the 5d/moderate proportion by subtracting the 3d/vig from the total.)

^(b)based on Census 2000 counts for Mpls/St. Paul MSA – ages 45–64.

^(c)based on Census 2000 counts for Mpls/St. Paul MSA – ages 55–69.

^(d)based on Census 2000 counts for Mpls/St. Paul MSA – ages 50–69.

^(e)based on Census 2000 counts for Mpls/St. Paul MSA – “married, spouse present” – ages 55–64.

^(f)based on Census 2000 counts for Mpls/St. Paul MSA – household income – ages 55–64.