Table 1: Distribution of the Participants According to Age and Gender

Age (years)  Frequency (%)
Male Female Total
12 42 (14.0) 51 (16.3) 93 (15.2)
13 44 (14.7) 36 (11.5) 80 (13.1)
14 50 (16.7) 43 (13.7) 93 (15.2)
15 42 (14.0) 33 (10.5) 75 (12.3)
16 44 (14.7) 55 (17.6) 99 (16.2)
17 43 (14.4) 65 (20.8) 108 (17.6)
18 34 (11.4) 30 (9.6) 64 (10.5)
Total 299 (48.9) 313 (51.1) 612 (100)
Mean 14.9 ± 1.9 15.0 ± 2.0 15.0 ± 2.0
Median 15 15 15

Student’s t test (independent) = 0.82, p = 0.42

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