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Table 1 Descriptive statistics and tests results for socioeconomic status (SES) in children aged 6-15 years (N = 18,264), by School level (ptimary and secondary schoolchildren)

From: Effects of Body Mass Index (BMI), demographic and socioeconomic factors on organized physical activity (OPA) participation in children aged 6-15 years: a cross-sectional study comparing primary and secondary school children in Greece

Socio-economic status variables Total N(%) Primary schoolchildre N(%) Secondary schoolchildren N (%) P-value
Years of Paternal education
  < 9 years 1830(7.60) 1146(10.10) 684(15.70) 0.33**
 9–12 years 8499(56.60) 6145(54.10) 2354(54.00)  
 12–16 years 5002(33.30) 3761(33.20) 1241(28.40)  
  > 16 years 382(2.50) 298(2.60) 84(1.90)  
Years of Maternal education
  < 9 years 1420(10.60) 889(7.10) 531(11.80) < 0.04**
 9–12 years 7971(53.90) 5579(47.90) 2392(53.30)  
 12–16 years 6383(33.10) 4906(42.10) 1477(33.00)  
 16 years 359(2.40) 275(2.40) 84(1.90)  
Socio-economic status variables Total N(%) Primary schoolchildren N(%) Secondary schoolchildren N (%) P value
Ηome square meters (m2)/ persons living at home
< 50 16,878 (98.00) 11,944 (96.60) 4934 (100.00) < 0.001*
50–75 395 (2.00) 395 (3.00)   
76–130 26 (< 0.10) 26 (0.20)   
Number of cars
 0 934(5.30) 617(4.90) 317(6.30) 0.19**
 1 8705(49.10) 645(48.50) 2560(50.70)  
 2 7364(41.60) 5427(42.80) 1937(38.40)  
  ≥ 3 717(4.00) 482(3.80) 235(4.70)  
Home property
 Rent 1821(10.30) 1029(8.10) 792 (15.40) 0.14*
 Owned 15,879(89.70) 11,746(91.90) 4133(80.30)  
  1. *The Chi-square test was used to calculate the p-value
  2. **The Mann-Whitney test was used to calculate the p-value