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Table 5 Neurobehavioral test scores by types of the computer

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

Neurobehavioral tests

Types of the computer

F or χ 2*

p-value*

Type I

Type II

Type III

Symbol digit (msec)

 Mean reaction time

2057.7 (395.3)

2033.9 (417.3)

2020.3 (395.0)

0.173

0.841

  Group I

2437.6 (347.7)

2539.9 (452.0)

2588.4 (602.6)

0.181

0.836

  Group II

2174.8 (433.2)

2127.0 (404.2)

2092.2 (335.9)

0.356

0.701

  Group III

1893.5 (280.4)

1866.7 (322.8)

1859.3 (276.5)

0.146

0.864

 SD of mean reaction time

567.9 (271.7)

595.9 (338.5)

504.8 (228.4)

2.120

0.122

  Group I

536.4 (93.4)

700.7 (425.9)

715.4 (406.1)

0.498

0.780

  Group II

588.9 (341.1)

617.5 (363.6)

501.1 (183.4)

0.618

0.734

  Group III

556.3 (229.4)

559.4 (303.2)

470.0 (206.8)

2.945

0.229

 Number of error

0.1 (0.4)

0.2 (0.6)

0.1 (0.2)

2.629

0.269

  Group I

0.0 (0.0)

0.4 (0.8)

0.1 (0.4)

2.321

0.313

  Group II

0.2 (0.5)

0.2 (0.8)

0.1 (0.3)

1.369

0.504

  Group III

0.1 (0.3)

0.2 (0.4)

0.0 (0.0)

5.034

0.081

 Mean reaction time, correct

2062.8 (394.5)

2038.2 (437.0)

2017.9 (394.3)

0.235

0.791

  Group I

2437.6 (347.7)

2558.1 (442.8)

2585.0 (604.9)

0.190

0.829

  Group II

2176.3 (437.6)

2135.9 (447.0)

2087.3 (335.3)

0.379

0.686

  Group III

1902.4 (277.4)

1864.8 (323.1)

1859.3 (276.5)

0.249

0.780

 SD of mean reaction time, correct

564.5 (272.4)

579.2 (323.0)

503.0 (229.6)

1.650

0.194

  Group I

536.4 (93.4)

705.1 (424.2)

720.1 (403.9)

0.386

0.824

  Group II

587.6 (342.8)

573.2 (319.0)

495.9 (186.6)

0.447

0.800

  Group III

550.6 (228.8)

561.5 (311.0)

470.0 (206.8)

2.518

0.284

Finger Tapping Speed§

 Dominant hand

64.1 (9.3)

66.1 (9.5)

66.2 (9.1)

1.319

0.269

  Group I

58.4 (10.3)

58.8 (10.0)

57.6 (6.9)

0.032

0.969

  Group II

63.2 (8.4)

65.7 (7.2)

65.9 (7.7)

1.307

0.275

  Group III

66.0 (9.4)

67.8 (10.6)

68.0 (9.6)

0.545

0.581

 Non-dominant hand

59.6 (9.2)

61.8 (9.2)

60.9 (9.3)

1.235

0.293

  Group I

54.1 (7.3)

55.1 (10.0)

55.3 (8.2)

0.047

0.954

  Group II

59.3 (9.3)

60.2 (8.5)

58.9 (8.7)

0.214

0.808

  Group III

61.0 (9.1)

64.4 (9.0)

63.6 (9.3)

1.666

0.193

  1. The value are expressed as mean (standard deviation). SD standard deviation. *calculated by one way ANOVA or Kruskal Wallis test. §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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