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Table 1 Characteristics of subjects (n = 1,559)

From: School difficulties in immigrant adolescent students and roles of socioeconomic factors, unhealthy behaviours, and physical and mental health

  %
Nationality
 French 93.1
 European immigrants 3.5
 Non-European immigrants 3.5
School difficulties
 Grade repetition 14.7
 Low school performance (<10/20) 8.2
 School dropout ideation at 16 years 3.8
Boys 49.9
Age (yr)
 12 or under 38.7
 13 23.9
 14 or over 37.4
 Mean (SD) 13.0 (1.3)
Family structure
 Intact 63.0
 Parents divorced/separated and reconstructed family 25.1
 Single parent and others 11.9
Father’s occupation
 Managers, professionals, and intermediate professionals 38.2
 Craftsmen, tradesmen, and firm heads 20.1
 Service workers and clerks 9.2
 Manual workers and other occupations 25.0
 Inactive people 7.5
 Insufficient income 17.7
WHOQoL-Bref (<25 th percentile value)
 Physical 23.2
 Psychological 27.0
 Social relationships 26.6
 Environment 25.1
Unhealthy behaviors
Last-30-day substance use (at least once)
 Tobacco 11.2
 Alcohol 35.2
 Cannabis 5.6
 Other drugs 2.8
 Lack of regular sports/physical activities 11.7