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Table 3 Item response frequencies for pairs of Performance + Squinting items and Satisfaction + Squinting items

From: Development of the Near Vision Presbyopia Task-based Questionnaire for use in evaluating the impact of presbyopia

Item Response Pairs

Book n (%)

Newspaper n (%)

Menu n (%)

Nutrition Label n (%)

Performance + Squinting

 “Yes, but I still could not read any of the text” and…

   “I could not read any of the text due to problems seeing up close”

18 (12.24)

15 (10.20)

9 (6.12)

10 (6.80)

   “Poor”

11 (7.48)

9 (6.12)

4 (2.72)

14 (9.52)

   “Fair”

0 (0.00)

0 (0.00)

1 (0.68)

2 (1.36)

   “Good”

0 (0.00)

0 (0.00)

0 (0.00)

0 (0.00)

   “Very Good”

0 (0.00)

0 (0.00)

0 (0.00)

0 (0.00)

   “Excellent”

0 (0.00)

0 (0.00)

0 (0.00)

0 (0.00)

 “Yes, and squinting helped me read some or all of the text” and…

   “I could not read any of the text due to problems seeing up close”

0 (0.00)

0 (0.00)

1 (0.68)

0 (0.00)

   “Poor”

10 (6.80)

11 (7.48)

13 (8.84)

11 (7.48)

   “Fair”

9 (6.12)

10 (6.80)

13 (8.84)

18 (12.24)

   “Good”

1 (0.68)

2 (1.36)

4 (2.72)

5 (3.40)

   “Very Good”

1 (0.68)

1 (0.68)

1 (0.68)

1 (0.68)

   “Excellent”

0 (0.00)

0 (0.00)

0 (0.00)

0 (0.00)

 “No, I did not squint” and…

   “I could not read any of the text due to problems seeing up close”

15 (10.20)

19 (12.93)

8 (5.44)

14 (9.52)

   “Poor”

15 (10.20)

13 (8.84)

14 (9.52)

23 (15.65)

   “Fair”

23 (15.65)

24 (16.33)

20 (13.61)

22 (14.97)

   “Good”

22 (14.97)

21 (14.29)

32 (21.77)

12 (8.16)

   “Very Good”

15 (10.20)

13 (8.84)

15 (10.20)

8 (5.44)

   “Excellent”

7 (4.76)

9 (6.12)

12 (8.16)

7 (4.76)

Missing response to either item

0 (0.00)

0 (0.00)

0 (0.00)

0 (0.00)

Satisfaction + Squinting

 “Yes, but I still could not read any of the text” and…

    

   “Very dissatisfied”

20 (13.61)

16 (10.88)

9 (6.12)

12 (8.16)

   “Dissatisfied”

7 (4.76)

8 (5.44)

3 (2.04)

11 (7.48)

   “Neither satisfied nor dissatisfied”

2 (1.36)

0 (0.00)

2 (1.36)

2 (1.36)

   “Satisfied”

0 (0.00)

0 (0.00)

0 (0.00)

1 (0.68)

   “Very satisfied”

0 (0.00)

0 (0.00)

0 (0.00)

0 (0.00)

 “Yes, and squinting helped me read some or all of the text” and…

   “Very dissatisfied”

3 (2.04)

4 (2.72)

7 (4.76)

4 (2.72)

   “Dissatisfied”

8 (5.44)

6 (4.08)

11 (7.48)

15 (10.20)

   “Neither satisfied nor dissatisfied”

7 (4.76)

9 (6.12)

9 (6.12)

10 (6.80)

   “Satisfied”

3 (2.04)

5 (3.40)

5 (3.40)

6 (4.08)

   “Very satisfied”

0 (0.00)

0 (0.00)

0 (0.00)

0 (0.00)

 “No, I did not squint” and…

   “Very dissatisfied”

19 (12.93)

20 (13.61)

14 (9.52)

23 (15.65)

   “Dissatisfied”

14 (9.52)

19 (12.93)

17 (11.56)

16 (10.88)

   “Neither satisfied nor dissatisfied”

15 (10.20)

13 (8.84)

11 (7.48)

16 (10.88)

   “Satisfied”

35 (23.81)

32 (21.77)

45 (30.61)

23 (15.65)

   “Very satisfied”

14 (9.52)

15 (10.20)

14 (9.52)

8 (5.44)

Missing response to either item

0 (0.00)

0 (0.00)

0 (0.00)

0 (0.00)

  1. Data are from Day 28 Hour 1