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Table 2 Characteristics of adolescent students for 2007, 2012 and 2018 surveys in Argentina

From: Health risk behaviours among adolescents in Argentina: trends between 2007, 2012 and 2018 national cross-sectional school surveys

Variable 2007 (N=1,980) 2012 (N=56,736) 2018 (N=56,981)
  N (%) N (%) N (%)
Sex
 Male 957 (48.0) 26728 (48.3) 27083 (48.0)
 Female 994 (52.0) 29248 (51.7) 29362 (52.0)
 Missing 29 760 536
Age in years
 13 years or younger 370 (18.7) 11412 (26.0) 10767 (21.0)
  14 600 (27.0) 16354 (29.5) 12946 (25.0)
  15 576 (29.6) 15448 (25.4) 12812 (22.0)
  16 years or older 400 (24.8) 12812 (19.2) 20348 (31.9)
  Missing 34 468 108
Grade
  A 732 (38.4) 28576 (37.2) 8581 (14.7)
  B 880 (32.0) 19944 (33.5) 11913 (26.9)
  C 337 (29.7) 16574 (29.3) 12448 (23.3)
  D-E 0 0 22978 (35.1)
Missing  31 1642 1061
Food insecurity (as proxy for socioeconomic status)
  None 1321 (67.1) 35222 (64.4) 38257 (68.4)
  Moderate 588 (29.8) 18680 (31.7) 17162 (29.6)
  Severe 58 (3.1) 2140 (3.9) 1063 (2.0)
  Missing 13 694 499
  1. A=’8th grade of primary school/polimodal or 1st year of high school’; B=’9th grade of primary school/polimodal or 2nd year of high school’; C=’1st year/10th grade polimodal or 3rd year of high school’; D=’2nd year/11th grade polimodal or 4th year of high school’; E=’3rd year/12nd grade polimodal or 5th year of high school.’