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Table 1 Subject characteristics by sports club participation and gender

From: Low back and neck and shoulder pain in members and non-members of adolescents’ sports clubs: the Finnish Health Promoting Sports Club (FHPSC) study

  Boys (n = 772) Girls (n = 865) Total (n = 1637)
Variable Member Non-member P-value* Member Non-member P-value* Member Non-member P-value*
Age, mean (SD) 15.5(1) 15.5(0) 0.643 15.5(1) 15.5(0) 0.880 15.5(1) 15.5(1) 0.839
BMI, mean (SD) 20.9(2) 21.5(4) <0.05 20.6(2) 21.1(4) <0.05 20.7(2) 21.3(4) <0.002
Menarche,% (n = 882) - -   92.8 % 97.5 % <0.001 - - -
Chronic disease,a% 30.4 % 26.4 % 0.242 30.1 % 29.4 % 0.818 30.2 % 28.1 % 0.358
Regular medication,b% 23.5 % 18.6 % 0.113 29.0 % 33.2 % 0.189 26.2 % 27.1 % 0.680
NSAID use, previous month,% 59.6 % 46.1 % <0.001 75.0 % 73.7 % 0.655 67.2 % 62.2 % <0.05
Special diet,c% 8.0 % 5.7 % 0.245 17.2 % 18.0 % 0.754 12.5 % 12.9 % 0.804
Dietary supplements use,d% 67.3 % 36.8 % <0.001 70.1 % 57.2 % <0.001 68.7 % 48.7 % <0.001
No Smoking, % 94.5 % 81.4 % <0.001 92.6 % 73.9 % <0.001 93.6 % 77.0 % <0.001
Screen time,e mean (SD) 4.6(4) 6.4(5) <0.001 3.6(2) 5.6(5) <0.001 4.1(3) 5.9(5) <0.001
Leisure time PA, f, g %    <0.001    <0.001    <0.001
 Approx. <30 min/week 0.8 % 15.4 %   0.9 % 18.5 %   0.8 % 17.2 %  
 Approx. 1–3 h/week 16.3 % 53.9 %   14.9 % 56.9 %   15.6 % 55.6 %  
 Approx. 4–6 h/week or more 82.9 % 30.7 %   84.2 % 24.6 %   83.5 % 27.2 %  
  1. Statistically significant findings are indicated in bold
  2. *p-value for difference between members and non-members of sports clubs
  3. aAllergy, asthma, diabetes, epilepsy, heart condition, etc.
  4. bContraceptives or other hormonal medication, allergy, asthma, insulin, epilepsy, or heart or blood pressure medication
  5. cVegetarian, low carb, lactose free, dairy free, gluten free, or other special diet
  6. dFor example, vitamins, protein supplements, amino acid supplements, creatine
  7. eTV, computer, computer/console games, phone, tablet use
  8. fBoys n = 770, girls n = 863, total n = 1633
  9. gIntensity: breathlessness and sweating