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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: J Natl Med Assoc. 2010 Mar;102(3):219–227. doi: 10.1016/s0027-9684(15)30528-9

Table 1.

Characteristics of Study Sample and Association of Sociodemographics With Dependent Variables

Mean of Each Dependent Variable
by Sociodemographic Characteristics
N % 95% CI MD/
No Symptoms
Community/
No Symptoms
Community/
Symptoms
MD/
Symptoms
P = .02 P = .61 P = 0.04 P = .35
Male 401 45.5 41.2-49.8 3.59 3.28 4.06 4.81
Female 747 54.5 50.2-58.8 3.89 3.21 3.78 4.87
Race/ethnicity P = .20 P < .0001 P < .0001 P = .52
 Puerto Rican
 Hispanic 311 22.4 19.1-25.7 3.85 3.70 4.32 4.86
 Black 355 31.1 27.3-35.0 3.87 3.69 4.23 4.89
 White 482 46.5 42.5-50.4 3.63 2.73 3.50 4.81
Age P < .0001 P = .09 P < .0001 P = .43
 18-39 216 22.9 19.9-27.4 3.27 3.45 4.35 4.79
 40-59 679 53.4 49.2-57.7 3.78 3.27 3.98 4.88
 ≥60 253 23.7 19.9-27.5 4.17 2.97 3.32 4.82
Income P = .41 P < .0001 P < .0001 P = .07
 <$20 000 327 24.2 20.5-27.8 3.74 3.62 4.37 4.83
 $20 000-$34 999 246 24.5 20.6-28.4 3.59 3.59 4.15 4.82
 $35 000-$49 999 155 16.0 12.7-19.3 3.95 3.32 3.68 4.81
 $50 000-$74 999 149 16.7 13.3-20.2 3.62 2.98 3.81 4.95
 ≥$75 000 146 18.6 15.0-22.2 3.88 2.56 3.40 4.83
Education P = .02 P < .0001 P = .01 P = .08
 High school
 or less
182 12.1 9.3-14.8 3.67 3.72 4.20 4.83
 Tech school 312 27.1 23.3-30.9 3.69 3.44 4.04 4.77
 Some college 241 22.8 19.1-26.5 3.54 3.25 3.98 4.86
 College grad 252 23.9 20.3-26.6 3.87 3.20 3.89 4.89
 Postgraduate 153 14.1 11.1-17.1 4.12 2.55 3.35 4.95
Employed P = .26 P = .78 P = .64 P = .28
 Yes 666 59.6 55.4-63.7 3.70 3.22 3.94 4.87
 No 479 40.4 36.3-44.6 3.84 3.26 3.88 4.81
Health status P = .83 P = .18 P = .35 P = .60
 Excellent 216 19.4 16.0-22.8 3.76 3.25 4.01 4.91
 Very good 354 33.3 29.3-37.2 3.69 3.11 3.73 4.81
 Good 333 27.8 24.0-31.5 3.76 3.20 3.97 4.84
 Fair 194 15.9 12.7-19.2 3.90 3.59 4.09 4.88
 Poor 49 3.6 1.2-6.1 3.83 3.10 3.79 4.67