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Table 2 Bivariate analysis (Χ 2) of study independent variables and 1) having or not a chronic condition (CC), and 2) CC affecting or not participation/regular attendance in school

From: Contextual factors related to chronic condition in portuguese adolescents: highlights from the HBSC/WHO study

   Adolescents
Background   Without CC With CC Total χ 2 Df
   N % N %    
Gender Boy 1797 47.8 395 44.7 2192 2.709 1
Girl 1966 52.2 489 55.3 2455 (p = 0.100)
“Perception of school competence” Very good 325 8.7 81 9.2 406 0.346  
Good 1415 37.9 331 37.6 1746 (p = 0.951) 3
Average 1781 47.7 416 47.3 2197   
Bellow average 210 5.6 52 5.9 262   
“Feeling pressure with homework” None 802 21.6 148 17 950 17.478*** 3
A few 1092 29.4 244 28 1336 (p = 0.001)  
Some 1390 37.4 343 39.4 1733   
A lot 428 11.5 135 15.5 563   
   CC Does not Affect School CC Affects School Total χ 2 Df
   N % N %    
Gender Boy 566 48.0 99 50.3 665 0.354 1
Girl 614 52.0 98 49.7 712 (p = 0.552)
Perception of school competence Very good 103 8.8 19 9.7 122 10.964* 3
Good 426 36.4 61 31.3 487 (p = 0.012)  
Average 567 48.4 90 46.2 657   
Bellow average 75 6.4 25 12.8 100   
“Feeling pressure with homework” None 223 19.2 34 17.5 257 6.068 3
A few 342 29.5 51 26.3 393 (p = 0.108)  
Some 429 37 68 35.1 497   
A lot 166 14.3 41 21.1 207   
  1. Indicates significant differences for the following levels: ***p ≤ .001; *p ≤ .05