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Table 8 Observed and adjusted scores accounting for DIF

From: Item analysis of the KIDSCREEN-10 using Rasch modelling

  Observed Adjusted Bias
  Mean se Mean se
Gender
 Girls 31.57 0.21 31.50 0.21 0.07
 Boys 32.01 0.23 32.26 0.22 − 0.24
Citizenship
 Swiss 32.39 0.26 32.52 0.26 − 0.13
 Swiss and another 31.69 0.26 31.64 0.26 0.05
 Another 31.34 0.27 31.50 0.26 − 0.16