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Table 7. 
Spearman-Brown scale reliability
ScaleARWUTHEQS
1211
2012 0.86 0.88 0.95 0.82 
2013 0.87 0.88 0.95 0.83 
2014 0.87 0.89 0.96 0.83 
2015 0.87 0.88 0.95 0.88 
2016 0.87 0.84 0.95 0.84 
2017 0.87 0.83 0.95 0.84 
2018 0.87 0.83 0.95 0.89 
ScaleARWUTHEQS
1211
2012 0.86 0.88 0.95 0.82 
2013 0.87 0.88 0.95 0.83 
2014 0.87 0.89 0.96 0.83 
2015 0.87 0.88 0.95 0.88 
2016 0.87 0.84 0.95 0.84 
2017 0.87 0.83 0.95 0.84 
2018 0.87 0.83 0.95 0.89 
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