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Table 3 Age and sex distribution of symptom scores in the Refractive Error Group (REG) and the Normal Cohort Group (NCG)

From: Visual symptoms associated with refractive errors among Thangka artists of Kathmandu valley

Symptoms

Subject groups

Percentage symptom score

Age group in years

Sex

16–20

21–25

26–30

31–35

36–40

P #

Males

Females

P #

Internal symptoms

 Tired eye

REG

13.0

12.3

16.2

9.7

11.2

0.11

11.5

12.1

0.27

NCG

13.6

14.0

11.7

9.3

14.4

0.43

11.1

13.5

0.01

 Sore or aching eye

REG

17.4

12.9

14.0

11.8

10.1

0.06

10.7

14.2

0.25

NCG

15.0

12.4

12.3

13.8

12.3

0.82

12.2

13.9

0.02

 Blurred vision

REG

21.8

14.8*

16.2

14.5

18.2

0.87

17.9**

14.0

0.66

NCG

11.6

10.7

12.0

13.8

12.3

0.52

12.5

11.7

0.62

 Double vision

REG

8.7

7.7

6.0

9.5

8.5

0.55

7.9

8.9

0.02

NCG

9.0

7.8

6.0

9.1

8.4

0.56

8.2

7.9

0.71

External symptoms

 Dry eye

REG

5.8

6.5

12.0

11.8

10.8

0.20

11.9

8.9

0.18

NCG

10.3

9.1

12.9

11.0

9.8

0.31

9.9

11.2

0.07

 Burning eye

REG

14.5

14.2

12.0

15.4*

12.5

0.09

13.1

14.9*

0.80

NCG

11.6

12.4

15.7

11.9

11.3

0.12

13.4

12.1

0.55

 Irritated eye

REG

5.8

9.0

12.0

9.7

11.5

0.35

9.8

10.8

0.14

NCG

7.3

11.6

11.4

11.5

11.3

0.07

10.6

10.9

0.28

 Watering eye

REG

7.2

12.9

6.0

10.6

9.8

0.007

9.2

10.2

0.11

NCG

10.6

14.2

10.0*

12.1

10.8

0.20

12.6*

11.2

0.76

General visual discomfort

REG

5.8

9.7

5.6

7.0

7.4

0.14

8.0

6.0

0.80

NCG

11.0

7.8

8.0

7.5

9.4

0.62

9.4

7.7

0.67

  1. REG Refractive error group, NCG normal cohort group
  2. #significant at p-value <0.05 by Kruskal Wallis test
  3. *Significant at p-value <0.05 by Kruskal Wallis test
  4. **Significant at p-value < 0.01 by Kruskal Wallis test