Table 3: Consumption, attitude and knowledge about antibiotics of the subject sample.

Periodontal
health
(%) N=50
Gingivitis
(%) N=52
Chronic
periodontitis
(%) N=52
TOTAL
(%) N=154
Antibiotic use for medical
reasons during the last 5
years (%)
1-2 times 38%(19/50) 44%(23/52) 46%(24/52) 43%
3-4 times 26%(13/50) 25%(13/52) 29%(15/52) 27%
>5 times 36%(18/50)
(a)
27%(14/52) 15%(8/52)
(a)
26%
Antibiotic use for dental
reasons during the last 5
years (%)
1-2 times 54%(27/50) 42%(22/52) 42%(22/52) 46%
3-4 times 8%(4/50) 10%(5/52) 8%(4/52) 8%
>5 times 0% 4%(2/52) 6%(3/52) 3%
β-Lactams (%) Yes 89%(39/44) 73%(37/51) 75%(38/51) 78%
tetracyclines (%)

imidazoles (%)
Yes 31%(13/42)
(a)
20%(10/51) 6%(3/47)
(a)
18%
Yes 17%(7/41) 24%(12/51) 13%(6/47) 18%
Available at home (%) Yes 30%(15/50) 33%(17/52) 17%(9/52) 27%
Without Prescription (%) Yes 2%(1/50) 2%(1/52) 0%(0/52) 1%
By a pharmacist 14%(7/50) 25%(13/52) 15%(9/52) 18%
Antibiotic intake last 6-12
months (%)
Yes (β-lactams) 28%(14/50) 14%(7/51)
(a)
33%(17/52)
(a)
25%
Knowledge about
antimicrobial resistance
(%)
Yes 48%(24/50)
(a)
29%(15/51) 23%(12/52)
(a)
33%

Statistically significant differences among groups are indicated by the same letter. Statistically significant differences within each group are indicated by bold lettering (z-test for proportions with Bonferroni corrections, P<0.05).