Symptoms

Group: A

Group: B

Results

Headache

224 (74.67%)

46 (15.33%)

The chi-square statistic is 213.3603. The p-value is <0.00001. Significant at p < 0.05

Eye-strain

132 (44.0%)

19 (6.33%)

The chi-square statistic is 113.0017. The p-value is <0.00001. Significant at p < 0.05.

Blurry vision

169 (56.33%)

34 (11.33%)

The chi-square statistic is 135.6851. The p-value is <0.00001. Significant at p < 0.05.