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Table 1 Characteristics of the study samples

From: Psychometric analysis of the Brazilian-version Kidscreen-27 questionnaire

Variables

Pilot in 2016

Baseline in 2017

p value

(n = 210)

(n = 816)

n (%)

n (%)

Sex

  

0.151*

 Boys

111 (52.9)

386 (47.3)

 

 Girls

99 (47.1)

430 (52.7)

 

Age mean (years)a

13.7 (1.0)

13.1 (1.1)

 < 0.001**

School year

  

0.009*

 7th year

52 (24.8)

291 (35.9)

 

 8th year

76 (36.2)

258 (31.8)

 

 9th year

82 (39.0)

262 (32.3)

 

HRQoLb

Mean (SD)

Mean (SD)

p value

Physical well-being

43.6 (10.3)

44.0 (9.8)

0.693**

Psychological well-being

45.0 (10.6)

45.7 (11.5)

0.409**

Autonomy and parent relation

46.4 (9.9)

46.8 (9.1)

0.558**

Social support and peers

47.6 (10.7)

49.8 (10.3)

0.007**

School environment

46.7 (7.9)

48.6 (8.9)

0.054**

  1. *Chi-square test; **Student's t test
  2. aVariable with 1 non-response at baseline
  3. bT-scores with a mean of 50 and standard deviation of 10