Study population
(n = 198)
Amoxicillin Amoxicillin clavulanate P valuea
N % N %
Participants age
Below 40 years 95 88 13 12 0.016
Above 40 years 61 74.4 21 25.6
Time of clinical activity
1 - 10 years 85 89.5 10 10.5 0.008
More than 10 years 71 74.7 24 25.3

aStatistically significant at P < 0.05 (Fischer's exact test).
N = number (total AMX = 156; AMC = 34).