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Table 1 Descriptive statistics (standard error in parentheses)

From: Associations between sleep deficit and academic achievement - triangulation across time and subject domains among students and teachers in TIMSS in Norway

 

2015

2019

Number of students

4499

4685

Number of schools

150

154

Mathematics achievement

512 (2.3)

503 (2.4)

Science achievement

509 (2.8)

495 (3.1)

Percentage of girls

50.0%

49.2%

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BMC Public Health

ISSN: 1471-2458

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