Table 3.
Distribution of symptoms according to activities in different age groups
| Group I (n=50) | Group II (n=135) | Total | P | |
|---|---|---|---|---|
| Laptop/computer/smartphone | ||||
| <1 h | 3 (6.0) | 7 (5.2) | 10 (5.4) | 0.385 |
| Up to 2 h | 8 (16.0) | 19 (14.0) | 27 (14.6) | |
| Up to 4 h | 9 (18.0) | 44 (32.6) | 53 (28.5) | |
| Up to 6 h | 20 (40.0) | 44 (32.6) | 64 (35.0) | |
| >6 h | 10 (20.0) | 21 (15.6) | 31 (16.5) | |
| *Were these symptoms previously existent? | ||||
| No | 41 (82.0) | 107 (79.3) | 148 (80.0) | 0.761 |
| Yes | 3 (2.0) | 12 (9.9) | 15 (8.0) | |
| *The above symptoms have increased since | ||||
| Yes | 6 (13.6) | 16 (13.4) | 22 (13.5) | 0.975 |
| No | 38 (86.4) | 103 (86.6) | 141 (86.5) | |
| Change in power of prescription in the last 6 months | ||||
| 6/6 unaided | 17 (34.0) | 55 (40.8) | 72 (38.9) | 0.274 |
| No | 13 (26.0) | 30 (22.2) | 43 (23.2) | |
| Not checked | 15 (30.0) | 36 (26.7) | 51 (27.6) | |
| Yes | 5 (10.0) | 14 (10.3) | 19 (10.3) |
*The total is not 185 for these symptoms