Table 3 Demographic and other information.

From: Behavioral and neurophysiological aspects of working memory impairment in children with dyslexia

Characteristic

Control

Dyslexic

p

Male-to-female ratio

16:12

22:24

0.437

Age in months

M

103.6

101.3

0.248

SE

1.4

1.3

 

N

28

46

 

Grade

M

2.71

2.72

0.977

SE

0.09

0.07

 

N

28

46

 

Maternal education

M

2.82

3.07

0.407

SE

0.22

0.19

 

N

28

44

 

Paternal education

M

3.00

2.93

0.829

SE

0.24

0.21

 

N

27

43

 

Family income

M

4.04

3.93

0.777

SE

0.28

0.24

 

N

28

43

 

Non-verbal intelligence

M

27.96

25.15

0.014*

SE

0.62

0.93

 

N

28

46

 

Individual alpha frequency

M

9.36

9.22

0.438

SE

0.14

0.11

 

N

28

46

 
  1. Coding of educational levels: 1 = middle school or below, 2 = high school, 3 = preparatory, 4 = college, 5 = postgraduate; monthly family income: 1 = HKD10,000 (USD1280) or below, 2 = HKD10,001–20,000 (USD1281–2560), 3 = HKD20,001–30,000 (USD2561–3840), 4 = HKD30,001–40,000 (USD3841–5120), 5 = HKD40,001–50,000 (USD5121–6400), 6 = HKD50,001 (USD6401) or above.
  2. *p < 0.05.
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