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. 2014 Nov 3;111(46):16331–16336. doi: 10.1073/pnas.1414826111

Table 1.

Descriptive statistics

Descriptive variable No. participants (%)
Mean purpose (SD) 4.52 (0.93)
Mean age (SD) (y) 69.06 (9.84)
Female 4,139 (57.74)
Race/ethnicity
 Caucasian 5,607 (78.22)
 African American 936 (13.06)
 Hispanic 527 (7.35)
 Other 98 (1.37)
Married status 4,639 (64.72)
Education
 <High school 1,366 (19.07)
 High school 3,952 (55.14)
 ≥College 1,850 (25.80)
Total wealth
 First quintile 1,437 (20.05)
 Second quintile 1,431 (19.96)
 Third quintile 1,436 (20.03)
 Fourth quintile 1,431 (19.96)
 Fifth quintile 1,433 (19.99)
Mean no. of chronic illnesses (SD) 2.11 (1.43)
Smoking status
 Never 3,116 (43.47)
 Former smoker 3,145 (43.88)
 Current smoker 907 (12.65)
Exercise
 Never 4,528 (63.17)
 One to four times per month 1,008 (14.05)
 More than once per week 1,632 (22.77)
Alcohol frequency (d/wk)
 Never 3,486 (48.63)
 <1 1,300 (18.14)
 1–2 1,134 (15.82)
 3+ 1,248 (17.40)
Insured 6,850 (95.58)
Urbanicity
 Urban 3,332 (46.49)
 Suburban 1,535 (21.41)
 Rural 2,301 (32.10)

Unless otherwise noted, values are number of participants (percentage).