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Table 1 Descriptive statistics (n = 1714)

From: Sleep and behavioural problems associate with low mood in Finnish children aged 4–12 years: an epidemiological study

  n (%)  
Age in years, mean (SD) 7.9 (2.3)  
 Preschool age 668 (39.0)  
 School age 1046 (61.0)  
 Girls 869 (50.7)  
 Boys 845 (49.3)  
 Sleeping problems 246 (14.4)  
 Illness or disability 262 (15.3)  
Living in same household
 Mother 1688 (98.5)  
 Father 1436 (83.8)  
 Siblings 1454 (84.8)  
 Stepmother 10 (0.6)  
 Stepfather 102 (6.0)  
 Grandparent 6 (0.5)  
Residential area
 Major city 659 (38.4)  
 Medium-sized city 737 (43.0)  
 Small city/town 316 (18.4)  
 Unavailable information 1 (0.1)  
Parents’ marital status
 Married 1159 (67.6)  
 Divorced/live separately 268 (15.6)  
 Common-law marriage 259 (15.1)  
 Some other 23 (1.3)  
 Unavailable information 5 (0.3)  
  Mother n (%) Father n (%)
Parents’ occupation
 Manager 32 (1.9) 136 (7.9)
 Managerial employee 314 (18.3) 401 (23.4)
 White collar worker 487 (28.4) 264 (15.4)
 Entrepreneur 109 (6.4) 292 (17.0)
 Blue collar worker 666 (38.9) 563 (32.8)
 Student 52 (3.0) 7 (0.4)
 Retired 5 (0.3) 17 (1.0)
 Unavailable information 49 (2.9) 34 (2.0)