Psychometric analysis of the Brazilian-version Kidscreen-27 questionnaire

Abstract

Background The objective of this study was to verify the reliability, discriminatory power and construct validity of the Kidscreen-27 questionnaire in Brazilian adolescents. Methods Adolescents that participated of the pilot study (210 adolescents; 52.9% boys; 13.7 years old) and of the baseline (816 participants; 52.7% girls; 13.1 years old) of the Movimente Project in 2016/2017 composed the sample of the present study. This project was carried out in six public schools in the city of Florianópolis, Santa Catarina, Brazil. Test–retest reproducibility was assessed by the intraclass correlation coefficient and Gwet coefficient; internal consistency through McDonald's Omega; Hankins' Delta G coefficient verified the scale's discriminatory power and; confirmatory factor analysis to assess construct validity. Results Reproducibility values ranged from 0.71 to 0.78 for the dimensions (ICC), and ranged from 0.60 to 0.83 for the items (Gwet). McDonald's Ômega (0.82–0.91) for internal consistency measures. Discriminatory power ranging from 0.94 for the dimension Social Support and Friends to 0.98 for Psychological Well-Being. The factorial loads were > 0.40, except for item 19 (0.36). The fit quality indicators of the model were adequate (X2[df] = 1022.89 [311], p < 0.001; RMSEA = 0.053 (0.049–0.087); CFI = 0.988; TLI = 0.987), confirming the five-factor structure originally proposed. Conclusions The Brazilian-version Kidscreen-27 achieved good levels of reproducibility, internal consistency, discriminatory power and construct validity. Its use is adequate to measure the health-related quality of life of adolescents in the Brazilian context.

The KIDSCREEN-27 Quality of Life Measure for Romanian Children Aged 6: Reliability and Validity of the Romanian Version

“…Following the discussions, the parents were advised to find a way in which the child could allocate time to friends without neglecting the physical activities in which they participate. Our results (r = 0.46–at the last phase of evaluation) are much smaller than those obtained by da Silveira [ 61 ], who obtained a Pearson correlation of 0.93 for item 2 ( Have you had fun with your friends? )…”

“…However, in parents' perception, these results can be strongly correlated with the age of the children; it goes without saying that a child in a preparatory school does not have their own expenses at school, considering that they are not allowed to leave the school premises. Our results are in accordance with those obtained by da Silveira and co-workers, which verified the reliability, discriminatory power and construct validity of the KIDSCREEN-27 questionnaire in Brazilian adolescents (pilot sample 13.7 ± 1.0 years, baseline sample 13.1 ± 1.1 years) [61]. They found that the Pearson correlation coefficient were greater than 0.40, except for item 7 (Have you had enough money for your expenses?)…”

“…Due to the 2-week interval test-retest, an ICC of 0.6 or higher was considered acceptable regarding the reproducibility of the data. The reproducibility of the present study found lower ICC values than other studies [32,34,60,61,[64][65][66]. The differences are mainly due to the size of the study, the age range of the children (6 years in the present study versus over 8 years in the other studies), the retest period (2 weeks in our study versus 1 week in the other studies) and the questionnaire application procedure (questionnaire completion during classes versus face-to-face interview or telephonic interview).…”

“…The vast majority of research studies focus on either children with various health problems or children who are orphaned or come from divided families [ 52 , 53 , 54 , 55 , 56 , 57 , 58 ]. There are few published studies investigating the health-related quality of life, the needs and desires, and the physical and mental wellbeing of children without medical problems who come from families with both parents and with a socioeconomic status from medium to high [ 11 , 59 , 60 , 61 ]. As far as we know, none of these studies evaluated 6-year-old healthy children, especially Romanian children.…”

The KIDSCREEN-27 scale: translation and validation study of the Slovenian version

“…Also, the explained variance within each dimension was above the set criterion for all dimensions except Autonomy & Parent Relations. On the other hand, the scale achieved good levels of reproducibility, internal consistency, discriminatory power and construct validity among Brasilian adolescents [21]. The validation is a rigorous process and crucial for research in the field of health, social, and behavioural sciences.…”