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Official Journal of the Japan Wood Research Society

Table 3 P values by paired t test of each subjective symptom item shown in Fig. 6

From: Reducing eye fatigue through the use of wood

Subjective symptoms items

White plastic panel

Black plastic panel

Wood panel

1. dry eyes

0.000

0.000

0.255

2. eye pain

0.000

0.000

0.326

3. dizziness

0.026

0.012

0.326

4. eye fatigue

0.000

0.000

0.048

5. bleary eyes

0.000

0.000

0.712

6. blurriness

0.012

0.000

0.662

7. heaviness in head

0.023

0.016

0.573

8. sick feeling

0.161

0.001

0.083

9. headache

0.326

0.032

0.184

10. grogginess

0.326

0.011

0.161