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Fig. 6 | BMC Medical Research Methodology

Fig. 6

From: Item response theory and differential test functioning analysis of the HBSC-Symptom-Checklist across 46 countries

Fig. 6

Item parameter for the unidimensional GRM after alignment (Items 5–8). Notes. Item discrimination and threshold parameters with 95% CI. Vertical lines represent weighted average across all groups. Items (5) irritability/bad temper, (6) feeling nervous, (7) difficulties in getting to sleep, (8) feeling dizzy. The abbreviations of the country names can be found in Table 1

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BMC Medical Research Methodology

ISSN: 1471-2288

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