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Psychology: Research and Review

Table 1 Analysis by linear regression to evaluate the influence of demographic data in discourse

From: Influence of age and schooling in written discourse of healthy adults

Speech elements

β

Standard error

p

CI 95% (β)

No. of words

   

 Males

− 0.5

1.6

0.771

− 3.7; 2.7

 Age range, 40–59

0.2

1.7

0.906

− 3.1; 3.5

 Age range, 60–75

− 1.1

2.1

0.582

− 5.2; 3.0

 Education level, 9–11

6.8

1.8

< 0.001

3.2; 10.4

 Education level:,≥ 12

20.1

1.8

< 0.001

16.5; 23.7

Production time

   

 Males

− 1.8

7.2

0.801

− 15.9; 12.3

 Age range, 40–59

7.9

7.5

0.291

− 6.8; 22.7

 Age range, 60–75

23.8

9.3

0.011

5.6; 42.0

 Education level, 9–11

10.2

8.1

0.212

− 5.8; 26.2

 Education level, ≥ 12

36.1

8.1

< 0.001

20.1; 52.0

Number of IU

   

 Males

0.1

0.2

0.550

− 0.3; 0.5

 Age range, 40–59

− 0.1

0.2

0.777

− 0.5; 0.4

 Age range, 60–75

0.0

0.3

0.955

− 0.5; 0.5

 Education level, 9–11

1.3

0.2

< 0.001

0.9; 1.8

 Education level, ≥ 12

2.3

0.2

< 0.001

1.9; 2.8

Number of elements

  

 Males

0.0

0.1

0.784

− 0.2; 0.1

 Age range, 40–59

0.0

0.1

0.803

− 0.2; 0.1

 Age range, 60–75

− 0.1

0.1

0.313

− 0.3; 0.1

 Education level, 9–11

0.5

0.1

< 0.001

0.3; 0.7

 Education level, ≥ 12

0.8

0.1

< 0.001

0.7; 1.0

  1. Age in years, reference group, 19–39 years
  2. Education level in years, reference group, 5–8 years