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. Author manuscript; available in PMC: 2020 Oct 1.
Published in final edited form as: Ann Epidemiol. 2019 Aug 22;38:35–41. doi: 10.1016/j.annepidem.2019.08.005

Table 2.

Distribution of the propensity score and variables used for generating the propensity score by periodontal disease status in ARIC

CDC-AAP
 Original ARIC
Edentulism No Mild Moderate Severe p * No/Mild Moderate Severe p *
Propensity Score
 25th 0.52 0.27 0.12 0.35 0.13 <.0001 0.48 0.29 0.15 <.0001
 50th 0.70 0.30 0.14 0.40 0.15 0.50 0.34 0.19
 75th 0.77 0.42 0.17 0.42 0.18 0.51 0.36 0.25
Lifecourse SES, %
 High 34.40 73.86 88.45 74.66 66.13 <.0001 81.83 76.28 58.48 <.0001
 Low 65.60 26.14 11.55 25.34 33.87 18.17 23.72 41.52
Neighborhood Income, %
 <33,533 49.29 32.16 17.46 28.16 36.90 <.0001 22.93 29.61 41.87 <.0001
 >=33,533 and <50,031 30.50 29.88 29.15 29.75 30.39 31.66 28.56 28.46
 >=50,031 16.60 34.85 48.31 37.31 28.88 41.41 36.98 26.26
 Unknown 3.62 3.10 5.07 4.77 3.83 4.01 4.85 3.41
Health Insurance Status, %
 No 9.43 4.97 2.96 4.42 5.26 <.0001 3.62 4.18 6.81 <.0001
 Private or Medicare 83.05 88.71 95.77 90.53 88.77 93.16 90.59 84.74
 Medicaid or Others 6.03 5.79 1.13 4.57 5.17 3.03 4.90 7.10
 Unknown 1.49 0.53 0.14 0.48 0.80 0.20 0.33 1.35
Frequency of Routine Medical Examinations, %
 < once/5 years 17.73 9.59 13.10 12.81 16.67 <.0001 11.01 11.45 17.39 <.0001
 >= once/5 years 82.27 90.41 86.90 87.19 83.33 88.99 88.55 82.61
Having a Dentist, %
 No 52.48 8.89 4.65 11.18 17.65 <.0001 5.35 9.32 23.56 <.0001
 Yes 43.90 90.29 94.93 88.39 81.64 93.98 90.02 76.08
 Unknown 3.62 0.82 0.42 0.44 0.71 0.67 0.67 0.35
Frequency of Dental Care, %
 Regular 5.04 73.22 87.18 72.32 61.76 <.0001 83.05 74.19 50.32 <.0001
 Go When needed 75.46 24.39 11.13 24.90 34.40 15.18 23.38 44.71
 Don’t Go to the Dentist 15.96 1.05 0.56 1.47 1.78 0.59 0.81 3.34
 Unknown 3.55 1.35 1.13 1.31 2.05 1.18 1.62 1.63
Last Time of Dental Visit, %
 < 1 year 15.11 77.08 87.89 77.21 69.07 <.0001 84.03 78.94 61.04 <.0001
 >=1 year and < 5 years 27.30 16.90 10.00 16.23 19.88 12.74 15.68 23.92
 >= 5 years 54.26 5.32 1.83 6.01 10.16 2.71 4.71 14.27
 Unknown 3.33 0.70 0.28 0.56 0.89 0.51 0.67 0.78
*

p-values are based on the Kruskal-Wallis Test for the propensity score and the Chi-square test for the other covariates. The propensity score was generated based on lifecourse SES, neighborhood income, health insurance status, frequency of routine physical examination, having a dentist, frequency of routine dental visit, last time of dental visit.