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. 2015 Jul 1;10(7):e0126370. doi: 10.1371/journal.pone.0126370

Table 1. Characteristics of the study population.

Condition/Variable MI (n = 200) non-MI (n = 200) p
Male gender; n (%) 168 (84) 168 (84) 1.00
Age (Mean ± SD) 61±8 61±8 0.73
Smoking; n (%)
Yes 19 (10) 26 (13) 0.34
No 74 (38) 83 (42)
Ex-smoker 103 (52) 91 (45)
Snuffing; n (%)
Yes 10 (5) 24 (12) 0.07
No 158 (81) 152 (76)
Ex-snuffer 25 (13) 23 (12)
Hypertension; n (%) 83 (42) 67 (34) 0.20
Diabetes; n (%) 18 (9) 10 (5) 0.28
Medical treatment; n (%)
ACEI 136 (68) 21 (11) 0.001
Aspirin 194 (97) 26 (13) 0.001
Beta blocker 180 (90) 31 (16) 0.001
Statins 188 (94) 37 (19) 0.001
Anti-inflammatory drugs 4 (2) 10 (5) 0.10
Clinical periodontal status: Median (IQR)
Plaque 53 (50) 45 (47) 0.34
BOP 26 (39) 21 (34) 0.08
PPD 4–5 mm 11 (18) 9 (17) 0.12
PPD ≥ 6 mm 0 (2) 1 (0) 0.08
Total PPD mm 48 (88) 38 (71) 0.01

ACEI = angiotensin-converting enzyme inhibitors, IQR = Interquartile range, BOP = bleeding on probing, PPD = probing pocket depth. Significance of the differences calculated with Students t-test (age), Chi 2 or Mann-Whitney´s U test.