Skip to main content

An IERI – International Educational Research Institute Journal

Table 3 Comparison of the amount of data in the linking approaches

From: Linking the first- and second-phase IEA studies on mathematics and science

 

Four-country-all-time

First-second-time

FIMS

SIMS

T95

T99

T03

T95

Bridge items

9

17

17

11

7

17

Countries

4

4

4

4

4

42

Sample size

2000

2000

2000

2000

2000

21,000

Responses

18,000

34,000

34,000

22,000

14,000

 

Total responses

122,000

357,000

  1. This table shows the number of item responses in the two linking approaches used for the bridge between SIMS and TIMSS 1995. Weighted sample sizes are applied with senate weights that sum up to 500 per country