Table 4: Cross tabulation of type of data display screens (DDS)

and the time of use by the participants.

Equipment

Time and type of equipment of use of DDS, n (%)

6 hours

7 hours

8 hours

9 hours

10 hours

Total

Computer

2 (15.4)

4 (30.8)

1 (7.7)

4 (30.8)

2 (15.4)

13 (100.0)

Laptop

1 (5.6)

2 (11.1)

4 (22.2)

7 (38.9)

4 (22.2)

18 (100.0)

Smartphone

3 (8.8)

2 (5.9)

3 (8.8)

14 (41.2)

12 (35.3)

34 (100.0)

Total

6 (9.2)

8 (12.3)

8 (12.3)

25 (38.5)

18 (27.7)

65 (100.0)