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. 2015 Oct 1;15:443. doi: 10.1186/s12913-015-1106-7

Table 2.

Bivariate associations between sociodemographic characteristics and dependent variables

Overuse Underuse
General overuse a problem Personal experiences with overuse Cost-related overuse Experiences with physicians protecting against overuse General underuse a problem Personal experiences with underuse Cost-related underuse
Major problem (%) Minor/no problem (%) Yes (%) No (%) Yes (%) No (%) Yes (%) No (%) Major problem (%) Minor/no problem (%) Yes (%) No (%) Yes (%) No (%)
Overall distribution 50.0 50.0 13.9 86.1 8.0 92.0 8.5 91.5 66.4 33.6 11.1 88.9 8.5 91.5
Race/Ethnicity
 Non-Hispanic White 46.8 53.2 13.3 86.7 5.5 94.5 7.2 92.8 61.7 38.3 9.6 90.4 6.8 93.2
 Non-Hispanic Black 56.9 43.1 15.8 84.2 19.5 80.5 11.2 88.8 84.4 15.6 16.7 83.3 15.4 84.6
 Hispanic 62.3 37.7 10.6 89.4 9.9 90.1 11.4 88.6 80.3 19.7 11.4 88.6 11.5 88.5
 Non-Hispanic Others 54.8 45.2 33.3 66.7 23.3 76.7 27.3 72.7 60.6 39.4 21.2 78.8 15.2 84.8
p-value 0.029 0.001 <.001 <.001 <.001 0.026 0.002
Gender
 Male 50.7 49.3 14.0 86.0 8.0 92.0 6.5 93.5 59.9 40.1 8.0 92.0 8.1 91.9
 Female 49.0 51.0 13.8 86.2 8.0 92.0 10.0 90.0 71.6 28.4 13.5 86.5 8.8 91.2
p-value 0.295 0.979 0.679 0.021 <.001 <.001 0.731
Age
 18–29 53.8 46.2 25.3 74.7 10.4 89.6 14.1 85.9 77.9 22.1 24.4 75.6 7.8 92.2
 30–49 46.1 53.9 14.5 85.5 9.6 90.4 9.7 90.3 66.5 33.5 14.3 85.7 10.8 89.2
 50–64 50.1 49.9 14.0 86.0 7.8 92.2 9.9 90.1 69.6 30.4 12.1 87.9 10.0 90.0
 65+ 52.4 47.6 11.0 89.0 5.8 94.2 4.3 95.7 60.7 39.3 3.8 96.2 4.4 95.6
p-value 0.815 <.001 0.485 0.003 0.009 <.001 0.100
Education
 Attended high school 65.1 34.9 14.2 85.8 12.3 87.7 10.4 89.6 70.2 29.8 15.4 84.6 9.2 90.8
 Graduated high school 54.7 45.3 12.2 87.8 9.7 90.3 7.2 92.8 71.5 28.5 12.4 87.6 9.2 90.8
 Attended college 47.6 52.4 15.8 84.2 7.7 92.3 11.6 88.4 69.5 30.5 13.1 86.9 10.6 89.4
 Graduated college 44.2 55.8 14.0 86.0 6.1 93.9 7.1 92.9 60.8 39.2 8.1 91.9 6.8 93.2
p-value <.001 0.063 0.293 0.001 0.004 0.004 0.058
Family income
 <$50,000 54.8 45.2 13.6 86.4 10.0 90.0 9.8 90.2 73.5 26.5 13.5 86.5 10.5 89.5
 $50,000+ 46.2 53.8 15.1 84.9 5.7 94.3 7.0 93.0 60.5 39.5 7.7 92.3 6.4 93.6
p-value 0.032 0.211 0.003 0.012 <.001 <.001 <.001
Self-reported health
 Excellent 53.2 46.8 13.6 86.4 6.4 93.6 3.9 96.1 54.7 45.3 5.8 94.2 3.5 96.5
 Very good 46.3 53.7 10.8 89.2 4.7 95.3 7.5 92.5 62.8 37.2 7.8 92.3 7.8 92.2
 Good 46.2 53.8 13.5 86.5 8.6 91.4 9.4 90.6 69.5 30.5 10.5 89.5 7.6 92.4
 Fair/Poor 56.7 43.3 19.1 80.9 13.5 86.5 12.3 87.7 76.5 23.5 20.3 79.7 14.6 85.4
p-value 0.521 0.007 0.085 0.003 <.001 <.001 <.001
Insurance status
 Uninsured 51.7 48.3 13.9 86.1 10.9 89.1 12.3 87.7 81.5 18.5 27.9 72.1 16.7 83.3
 Insured 49.4 50.6 13.9 86.1 7.7 92.3 8.0 92.0 64.7 35.3 9.2 90.8 7.5 92.5
p-value 0.148 0.380 0.894 0.144 <.001 <.001 <.001