(i) Short version of KIDSCREEN-52; (ii) 10 items, on a 5-point Likert-type scale; (iii) Ranges from 0 to 100; (iv) Lower values reflect feelings of unhappiness, dissatisfaction and inadequacy. Higher values show feelings of happiness, perception of adequacy and satisfaction within adolescent’s life contexts.
(i) Used in the HBSC/WHO Study [56, 57] (ii) 8 items focusing on subjective physical and psychological health complaints; (iii) Each item answered on a 5-point Likert-type response scale; (iv) Resulting values between 1 (worst health) and 5 (best health); (v) Ranges from 8 to 40.
Concerning the variable Psychosomatic Complaints (Scale Symptoms Check List – HBSC-SCL) and according to the literature that suggests that adolescents with recurrent multiple health complaints are considered to present noticeable subjective health complaints; an additional variable named SCL-MC (Multiple Complaints) was created, composed by those adolescents who reported two or more symptoms, more than once a week in the past six months.
Resilience (2 dimensions: external and internal resources).
RES
(i) The present study only used the internal resources; (ii) 18 items answered on a 4-point scale; (iii) Ranges from 18 to 72; (iv) Higher scores indicate higher levels of competences, protection and resilience to adversity.
Self-regulation (2 dimensions: Short term-SR-ST and Long term-SR-LT).
SR
(i) In this study the instrument was translated from the original English version into Portuguese language (and back translation). It was then revised by a group of specialized experts within the area and a pre-test in schools with a group of students was conducted. (ii) 36 items answered on a 5-point Likert scale; (iii) Ranges from 36 to 180. (iv) Higher values indicate better competences of self-regulation.
= .0.7
Scale of Satisfaction with Social Support [38, 55]
Satisfaction with social support (2 dimensions: Satisfaction with Social Support-SSS; and Need for Activities connected to Social Support-NASS).
SSSS
(i) Translation and adaptation for children and adolescents, of a Satisfaction with Social Support Scale for adults; (ii) 12 items answered on a 5-point scale; (iii) Ranges from 18 to 72; (iv) Higher scores indicate higher satisfaction with social support (SSS) or higher satisfaction for not feeling the need to have more social support activities (NASS).
