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Table 5 Item percent correct, averaged across countries and across items

From: The TIMSS 2019 Item Equivalence Study: examining mode effects for computer-based assessment and implications for measuring trends

Grade/subject Average percent correct across countries and items
paperTIMSS eTIMSS Difference
Fourth grade
 Mathematics 53.7 (18.1) 50.1 (18.0) 3.6 (6.0)
 Science 53.1 (17.9) 51.3 (17.5) 1.7 (6.0)
Eighth grade
 Mathematics 47.4 (19.1) 44.0 (18.5) 3.4 (5.3)
 Science 49.6 (18.4) 48.1 (18.5) 1.5 (5.7)
  1. ( ) Standard deviations appear in parentheses. Standard deviations of item percent correct were computed across items in each country and then pooled across countries. Because of rounding some results may appear inconsistent