Table 8: Cross tabulation of time of use of data display screens (DDS)

and the angle of measurement performed.

Time

(hours)

Normal

Hypolordosis

Hyperlordosis

Total

Cervical angle, n (%)

6

1 (16.7)

4 (66.7)

1 (16.7)

6 (100.0)

7

3 (37.5)

4 (50.0)

1 (12.5)

8 (100.0)

8

0 (0)

6 (75.0)

2 (25.0)

8 (100.0)

9

3 (12.0)

21 (84.0)

1 (4.0)

25 (100.0)

10

2 (11.1)

14 (77.8)

2 (11.1)

18 (100.0)

Total

9 (13.8)

49 (75.4)

7 (10.8)

65 (100.0)

Depth measurement, n (%)

6

2 (33.3)

3 (50.0)

1 (16.7)

6 (100.0)

7

3 (37.5)

4 (50.0)

1 (12.5)

8 (100.0)

8

2 (25.0)

6 (75.0)

0 (0)

8 (100.0)

9

4 (16.0)

21 (84.0)

0 (0)

25 (100.0)

10

8 (44.4)

10 (55.6)

0 (0)

18 (100.0)

Total

19 (29.2)

44 (67.7)

2 (3.1)

65 (100.0)

Angle of the Atlas (C1), n (%)

 

Normal

Extension

Flexion

 

6

0 (0)

4 (66.7)

2 (33.3)

6 (100.0)

7

1 (12.5)

3 (37.5)

4 (50.0)

8 (100.0)

8

0 (0)

7 (87.5)

1 (12.5)

8 (100.0)

9

3 (12.0)

20 (80.0)

2 (8.0)

25 (100.0)

10

1 (5.6)

13 (72.2)

4 (22.2)

18 (100.0)

Total

5 (7.7)

47 (72.3)

13 (20.0)

65 (100.0)