| | Guggenheimer et al., 2000 [20] | Saini et al., 2010 [21] | Bastos et al., 2011 [22] | Mohsin et al., 2014 [23] |
| Tobacco | Cases Now, 19.4% Ever, 37.5% | Controls U | Excluded | Cases 25 (17.2%) | Controls 30 (27%) | U |
| Other drugs taken | Cases Cardiovascular agents, 19.8%, Immunosuppressants, 2.7%, Anticonvulsants, 2.7%, Thyroid supplements, 8.4%, Antimicrobials, 10.4% Unknown, 5.2% | Controls Cardiovascular agents, 6% Immunosuppressants, 0.4% Anticonvulsants, 0.4% Thyroid supplements, 1.1% Antimicrobials, 8.6% Unknown, 7.1% | Cases Cardiovascular agents, 22.4% Antibiotics, 2.4% NSAID, 3.3% Antiasthmatic drugs, 1.4% Others, 2.4% | Controls Cardiovascular agents, 10% Antibiotics, 1% NSAID, 1.4% Antiasthmatic drugs, 1.7% Others, 1.7% | 39.2% taking a daily medication, of which 73.3% were antihypertensives and 56% were antidepressants | U |
| Dentures users | Cases Complete or partial dentures, 12.3%, | Controls Complete or partial dentures, 3% | U | U | U |
| DM diagnosis | U | U | Controls: excluded by fasting blood glucose level | U | U | Controls: excluded by fasting blood glucose level |
| Glycosylated hemoglobin (HbA1c) | 11 ± 0.1 | 8,49 ± 2,25 Good (<7.5), 172 (41%) Moderate (7.6–8.9), 92 (21.9%) Poor (>9), 156 (37.1%) | Adequate (<7): 38 (26%) Inadequate (≥7): 108 (74%) | U |
| Diabetic complications | Nephropathy, 23.2% Neuropathy, 26.9% Retinopathy, 44.4% Peripheral vascular disease, 10.6% | 14.5% U | 65 (44.5%) Nephropathy, 20.3% Neuropathy, 16.5% Retinopathy, 63.2% | Excluded |
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