Table 2

HbA1c values and the suspected diagnosis of (pre)diabetes* in patients with and without diabetes based on medical history

Control (n=109)Mild/moderate periodontitis (n=126)Severe periodontitis (n=78)p Value
Diabetes, Hx (%)†3 (2.8%)5 (4.0%)6 (7.7%)0.256
HbA1c (%) (mmol/mol)
 All subjects‡5.7±0.7 (39±8)6.1±1.4 (43±15)6.3±1.3§ (45±15)0.003
 Subjects without diabetes¶**5.7±0.6 (38±7)6.0±1.3 (42±15)6.2±1.2§ (44±13)0.009
Number of suspected diagnosis (%)
 All subjects‡0.010
  Healthy58 (53.2%)51 (40.5%)23 (29.5%)
  Pre-diabetes40 (36.7%)58 (46.0%)37 (47.4%)
  Diabetes11 (10.1%)17 (13.5%)18 (23.1%)
 Subjects without diabetes¶**0.024
  Healthy58 (54.7%)51 (42.1%)23 (31.9%)
  Pre-diabetes39 (36.8%)58 (47.9%)36 (50.0%)
  Diabetes9 (8.5%)12 (9.9%)13 (18.1%)
  • Data are presented as the mean±SD or as n (%).

  • *(Pre)diabetes classification according to the ADA guidelines 2015.

  • †Based on the medical history (Hx).

  • ‡Subjects with and without diabetes based on the medical history are included.

  • §Bonferroni test: p value <0.05 compared with control.

  • ¶Subjects with diabetes based on the medical history are excluded.

  • **Control: n=106; mild/moderate periodontitis: n=121; severe periodontitis: n=72.

  • ADA, American Diabetes Association; HbA1c, glycated hemoglobin.http://dx.doi.org/10.1136/bmjdrc-2016-000326