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Table 2 Characteristics by psychological distress for boys. Fit Futures 2010–2011, (n = 473)

From: Correction to: Are pro-infammatory markers associated with psychological distress in a cross-sectional study of healthy adolescents 15–17 years of age? The Fit Futures study

  With psychological distress Without psychological distress p-value*
n Mean (SD) n Mean (SD)
Age in years mean (SD) 51 16.14 (0.49) 422 16.05 (0.45) 0.09
Body fat percentage, dichotomous 50   422   0.41
 < 25   68%   73.5%  
 ≥ 25   32%   26.5%  
PDS status 42   334   0.52
 Completed   23.8%   16.8%  
 Underway   69.0%   74.6%  
 Barely started   7.1%   8.7%  
 Not begun   0%   0%  
Smoking 51   422   0.07
 No, never   66.7%   78.0%  
 Yes   33.3%   22.0%  
Snuffing 51   421   0.50
 No, never   54.9%   59.9%  
 Yes   45.1%   40.1%  
Alcohol 51   420   0.32
 Never   31.4%   32.9%  
 Once per month or less   29.4%   37.6%  
 Twice or more per month   39.2%   29.5%  
Physical activity 51   422   < 0.01
 Sedentary   49.0%   27.0%  
 Active   51.0%   73.0%  
Sleep (h) 51   415   0.01
 Low (≤ 7)   74.5%   54.9%  
 High (> 7)   25.5%   45.1%  
Current infection 51   421   0.86
 No   86.3%   87.2%  
 Yes   13.7%   12.8%  
Chronic disease 51   420   0.02
 No   58.8%   74.8%  
 Yes   41.2%   25.2%  
Intake of medication 51   421   0.57
 No   78.4%   81.7%  
 Yes   21.6%   18.3%  
High school program 51   422   0.12
 General studies   39.2%   28.7%  
 Sports and physical   5.9%   14.7%  
 Vocational   54.9%   56.6%  
CRP mg/L median and IQR 44 0.47 (1.22) 385 0.49 (0.78) 0.64
IL-6 NPX median and IQR 47 2.76 (0.61) 398 2.72 (0.62) 0.82
TGF-α NPX median and IQR 47 3.75 (0.68) 398 3.61 (0.74) 0.09
TRANCE NPX median and IQR 47 6.01 (0.77) 398 6.04 (0.65) 0.99
TWEAK NPX median and IQR 47 9.00 (0.30) 398 9.02 (0.37) 0.15
Vitamin D nmol/L Median and IQR 47 25.91 (15.81) 399 30.44 (21.43) 0.01
  1. *Chi-square for categorical variables and t-test or Mann Whitney U for continuous variables
  2. With psychological distress: a score above 1.85 on HSCL-10
  3. Without psychological distress: a score below 1.85 on HSCL-10
  4. Mean (SD) of continuous variable and percentages of categorical variables are reported
  5. Median and IQR are reported for inflammatory markers and Vitamin D
  6. PDS status Pubertal Development Scale status, Intake of medication intake of medications, analgetics or antibiotics in the last 24 h, CRP C-reactive protein, IL6-α Interleukin 6 alpha, TGF-α Transforming growth factor alpha, TRANCE Tumor Necrosis Factor-related activation-induced cytokine (O14788: TNF-related activation-induced cytokine within limits of detection), TWEAK Tumor necrosis factor-like weak inducer of apoptosis (O43508: TNF-like weak inducer of apoptosis within limits of detection), NPX Normalized protein expression, Vitamin D Standardized version of (25-OH)D