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An IERI – International Educational Research Institute Journal

Table 2 Sample description of the total PIAAC sample and the subsamples S1, S2, and S3

From: Rule-based process indicators of information processing explain performance differences in PIAAC web search tasks

  

Total

S1

S2

S3

n

 

63,924

5,921

3,103

3,278

Gender

% female

51.47

51.11

51.14

51.04

Age (in years)

M

39.68

35.31

35.91

36.72

 

SD

14.61

13.57

13.90

13.79

Education level

% low

21.53

15.54

16.27

14.55

 

% medium

46.82

44.18

44.89

45.18

 

% high

31.66

40.28

38.83

40.27

Reading skill (literacy)

M

0.00

-

0.13

0.16

Evaluation skill (item u06a)

M Determining usefulness

3.92

4.10

4.05

-

M Identifying deficiencies

1.65

1.76

1.74

-

Item success rate

u06b

0.55

0.57

0.54

-

 

u07

0.52

0.58

-

0.50