control group showed in both groups no significant reduction in IGD symptom severity at posttest. Another one-armed study investigating the effectiveness of a CBT group program in 18 adolescents showed a significant reduction of IUD symptom severity
). Combined interventions, however, were not considered. Moreover, the meta-analysis of Winkler et al. (2013) did not include more recent research. Favorable results for psychological and pharmacological interventions in reducing global severity of CB
McLellan, A. T., Luborsky, L., O’Brien, C. P. és mtsai: An improved diagnostic evaluation instrument for substance abuse patients – The Addiction Severity Index. J. Nerv. Ment. Dis., 1980, 168 , 26–33. O
. Interviews and questionnaires The existence and severity of participants’ Internet addiction was measured using the AICA checklist ( Wölfling et al., 2012 ) as well as the OSVe ( Wölfling et al., 2010 ). The AICA is an established diagnostic
. gondii -type proportions of different severities of human infection, and multiple comparisons were performed using the Z -test (where p values were adjusted by the Bonferroni method) [ 16 ]. Statistical heterogeneity among studies was calculated using
9 21 Mansfield, C. S., James, F. E. and Robertson, J. D. (2008): Development of a clinical severity index for dogs with acute pancreatitis. J. Am. Vet. Med. Assoc. 233 , 936
. Psychometric instruments The existence and severity of participants’ computer and/or Internet addiction was measured using the AICA checklist ( Wölfling, Beutel, et al., 2012 ) as well as the OSVe ( Wölfling et al., 2010 ). The AICA checklist is an
. Furthermore, the IGDS-SF9 may have great potential in evaluating IGD severity among teenagers. Although the IGDS-SF9 has been validated in several studies and different languages [e.g., English, Portuguese, and Italian ( Monacis et al., 2016 ; Pontes
-spectrum conditions. Journal of Psychosomatic Research, 60: 335–339. Kroenke, K., Spitzer, R. L., Williams, J. B. (2002): The PHQ-15: Validity of a new measure for evaluating the severity of somatic symptoms. Psychosomatic Medicine, 64: 258
., Paul, P., Shaner, G., Adhikari, T., Ali, S., Stein, Osborne, L. 2006. Effect of corn residue level, fungicide application, and cultivar resistance level on disease incidence and severity of Fusarium head blight and DON concentration. Page 46 in
