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Table 3 Prevalence of mild, moderate, and severe periodontitis among different groups of patients visiting HSDM

From: Prevalence of periodontitis and alveolar bone loss in a patient population at Harvard School of Dental Medicine

Percentage (%)
 N (%)MildSEModerateSESevereSEMABL* (mm)SE
Total1131 (100.0)55.51.420.71.22.80.51.300.006
Age Groups (yrs)
  < 30247 (21.8)17.02.31.20.70.0n/a0.770.006
 30–34108 (9.5)33.34.53.71.80.90.90.900.012
 35–49305 (27.0)51.82.812.71.91.90.81.240.010
 50–64300 (26.5)80.62.237.32.84.31.11.800.013
 65+171 (15.1)86.52.644.53.87.01.92.040.019
Gender
 Male508 (44.9)57.02.224.11.94.30.91.340.009
 Female623 (55.1)54.11.918.01.51.60.51.260.008
Race
 White413 (36.5)56.12.420.31.92.60.71.300.009
 African American100 (8.8)53.05.027.04.49.02.81.360.028
 Asian85 (7.5)62.35.229.44.91.11.11.430.020
 Other250 (22.1)58.03.120.02.51.60.71.290.012
 Unknown283 (25.0)48.23.215.12.33.01.11.240.013
Median Household Income
 Lower than median510 (45.1)55.12.222.11.83.90.81.320.009
 Higher than median621 (54.9)55.51.919.41.61.90.51.280.007
Body Mass Index
 Underweight27 (2.4)18.57.611.16.10.0n/a0.920.031
 Normal413 (36.5)52.52.419.11.92.60.81.230.009
 Overweight263 (23.2)60.83.023.22.62.20.91.400.013
 Obese137 (12.1)59.14.223.43.63.61.61.450.021
 Not reported291 (25.7)56.02.920.32.33.41.01.300.011
Smoking Status
 Never smoker668 (59.0)49.51.915.81.42.30.61.190.007
 Former smoker141 (12.4)70.23.841.14.14.21.71.720.021
 Current Smoker82 (7.2)58.55.419.54.42.41.701.410.023
 Not Reported240 (21.2)61.63.122.52.73.31.11.380.013
Diabetes
 Yes60 (5.3)75.05.640.06.36.73.21.810.038
 No1071 (94.7)54.21.519.61.22.60.51.280.006
CVD
 Yes132 (11.7)79.53.532.64.13.01.51.660.020
 No999 (88.3)52.11.519.11.22.80.51.260.006
Hypertension
 Normal346 (30.6)46.82.615.61.91.40.61.180.009
 Elevated157 (13.9)54.13.921.63.23.81.51.350.016
 Stage 1281 (24.9)59.72.924.52.52.10.81.370.012
 Stage 2125 (11.0)70.44.131.24.18.02.41.610.023
 Not reported222 (19.6)55.43.317.12.52.20.91.230.013
  1. N = 1131 patients (20,760 sites from 12,965 teeth)
  2. *MABL Mean alveolar bone “level” in millimeter