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Table 2 Composition sample ( n = 2,617) by age and gender

From: Prevalence of malocclusions, oral habits and orthodontic treatment need in a 7- to 15-year-old schoolchildren population in Tirana

Age (year) Total sample Composition sample by age Composition sample by gender
  Males Females Males + Females Males + Females (%) Males (%) Females (%)
  n n n    
7 132 137 269 10.3 49.1 50.9
8 101 140 241 9.2 41.9 58.1
9 143 145 288 11.0 49.7 50.3
10 127 145 272 10.4 46.7 53.3
11 136 151 287 11.0 47.4 52.6
12 140 153 293 11.2 47.8 52.2
13 164 142 306 11.7 53.6 46.4
14 167 179 346 13.2 48.3 51.7
15 147 168 315 12.0 46.7 53.3
Total 1,257 1,360 2,617 100.0 48.4 51.6