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Table 3 Neurobehavioral test scores by typing speed groups

From: Effects of computer familiarity and computer type on the performance of Korean computerized neurobehavioral test

Neurobehavioral tests

Typing speed

F-value

p-value*

Group I

Group II

Group III

Symbol digit (msec)

 Mean reaction time

2156.3 (89.5)

2087.7 (34.0)

1974.6 (33.4)

2.930

0.055

  Computer type I

2013.6 (153.2)

2126.3 (58.2)

2009.4 (57.2)

1.143

0.325

  Computer type II

2217.7 (166.0)

2075.3 (63.1)

1966.9 (62.0)

1.075

0.346

  Computer type III

2237.8 (150.9)

2061.5 (57.3)

1947.4 (56.3)

1.629

0.203

 SD of mean reaction time

615.6 (79.0)

566.1 (30.0)

537.4 (29.5)

0.414

0.662

  Computer type I

459.7 (132.4)

591.2 (50.3)

568.2 (49.4)

0.493

0.613

  Computer type II

611.4 (164.5)

601.0 (62.5)

589.0 (61.4)

0.011

0.989

  Computer type III

775.8 (107.0)a

506.0 (40.7)

455.1 (40.0)a

3.422

0.038

 Number of error

0.2 (0.1)

0.1 (0.1)

0.1 (0.1)

0.182

0.834

  Computer type I

0.0 (0.2)

0.2 (0.1)

0.1 (0.1)

1.675

0.194

  Computer type II

0.4 (0.3)

0.1 (0.1)

0.2 (0.1)

0.290

0.749

  Computer type III

0.2 (0.1)

0.1 (0.1)

0.0 (0.1)

2.038

0.138

 Mean reaction time, correct

2154.2 (91.4)

2089.1 (34.7)

1978.6 (34.1)

2.666

0.072

  Computer type I

2011.7 (153.8)

2129.0 (58.4)

2017.6 (57.4)

1.071

0.348

  Computer type II

2220.5 (174.7)

2081.8 (66.4)

1969.8 (65.2)

0.998

0.374

  Computer type III

2230.3 (150.6)

2056.3 (57.2)

1948.3 (56.2)

1.519

0.226

 SD of mean reaction time, correct

630.0 (77.3)

550.8 (29.4)

532.7 (28.9)

0.597

0.552

  Computer type I

473.7 (133.0)

590.7 (50.5)

559.3 (49.7)

0.433

0.650

  Computer type II

637.0 (157.5)

561.3 (59.8)

583.5 (58.8)

0.134

0.875

  Computer type III

779.3 (107.4)ab

500.6 (40.8)a

455.5 (40.1)b

3.508

0.035

Finger Tapping Speed§

 Dominant hand

58.9 (2.4)a

64.9 (0.9)

67.2 (0.9)a

4.489

0.012

  Computer type I

59.6 (4.3)

63.1 (1.6)

65.8 (1.6)

0.968

0.384

  Computer type II

57.2 (4.3)

65.3 (1.6)

68.4 (1.6)

2.528

0.086

  Computer type III

59.7 (4.0)

66.3 (1.5)

67.3 (1.5)

1.361

0.262

 Non-dominant hand

57.4 (2.4)

59.7 (0.9)

62.3 (0.9)

2.411

0.092

  Computer type I

58.6 (4.2)

59.7 (1.6)

59.8 (1.5)

0.036

0.965

  Computer type II

54.9 (4.2)

60.3 (1.6)

64.4 (1.5)

2.467

0.091

  Computer type III

58.7 (4.2)

59.3 (1.6)

62.7 (1.5)

1.157

0.320

  1. The value are expressed as mean (standard error) adjusted by age and education. SD standard deviation. *calculated by ANCOVA adjusted for age and education, same letters such as a and b in same row indicate differences at the 5 % significance level by post hoc test of Bonferroni F. §parameters of Finger Tapping Speed are the number of taps for 10 s
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Annals of Occupational and Environmental Medicine

ISSN: 2052-4374

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