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. 2022 Aug 11;17(8):e0272925. doi: 10.1371/journal.pone.0272925

Table 1. Characteristics of the study population.

Adolescents (N = 240) Referent parents (N = 194)
N (%) N (%)
Age in years, mean (SD) (N = 240/N = 194) 15.2 (2.1) 46.5 (9.0)
sex (N = 240/N = 194)
    Male 128 (53.3) 48 (24.8)
    Female 112 (46.7) 146 (75.2)
Nationality (N = 240/N = 194)
    Swiss 188 (78.3) 144 (74.2)
    Portuguese 10 (4.2) 8 (4.1)
    Italian 14 (5.8) 14 (7.2)
    French 13 (5.4) 9 (4.6)
    Others 15 (6.3) 19 (9.9)
Ethnicity (N = 240/N = 194)
    European-Caucasian 194 (80.1) 165 (85.1)
    Other 46 (19.9) 29 (14.9)
Parents’ marital status (N = 194)
    Married or in couple - 152 (78.4)
    Divorced, separated, single or widowed - 42 (21.6)
Household size in individuals, mean (SD) (N = 194) - 3.2 (1.1)
Education (N = 194)
    Lower - 12 (6.2)
    Medium - 62 (32.0)
    Higher - 120 (61.8)
Household financial situation (N = 194)
    High - 139 (71.6)
    Average to poor - 40 (20.6)
    Does not want to answer - 15 (7.8)
Crowded household (N = 193) - 20 (10.3)
Positive anti-SARS-CoV-2 serology (N = 240/N = 194) 53 (22.1) 45 (23.2)
Low self-reported HRQoL1 (N = 235) 26 (11.0) -
Self-reported sadness (N = 236) 84 (35.5) -
Self-reported loneliness (N = 237) 55 (23.2) -
Low parent-reported HRQoL2 (N = 234) 28 (11.9) -
Low parent-reported emotional well-being2 (N = 234) 38 (16.2) -
Average to poor mood (N = 194) - 30 (15.5)

Results are N (%), unless stated otherwise. All variables are self-reported, except serology (see Methods). Other ethnicities include Arab, Asian, African, Indian and South-American. HRQoL stands for health-related quality of life.

1 Based on the KIDSCREEN-10 scale.

2 Based on the KINDL® scale.