Table 4 Technology use and exposure (n = 490)
| Â | Smartphone | Tablet | Laptop | Desktop | ||||
|---|---|---|---|---|---|---|---|---|
Use | N | % | N | % | N | % | N | % |
Technology with any use | 459 | 93.67 | 131 | 26.74 | 447 | 91.25 | 166 | 33.88 |
Technology by ranking of usea | Â | Â | Â | Â | Â | Â | Â | Â |
 1st | 305 | 64.21 | 16 | 3.46 | 130 | 27.37 | 23 | 4.87 |
 2nd | 128 | 26.95 | 45 | 9.72 | 253 | 53.26 | 47 | 9.96 |
 3rd | 23 | 4.84 | 149 | 32.18 | 74 | 15.58 | 224 | 47.46 |
 4th | 19 | 4.00 | 253 | 54.64 | 18 | 3.79 | 178 | 37.71 |
Exposure | Mean (Standard Deviation) | Median | Mean (Standard Deviation) | Median | Mean (Standard Deviation) | Median | Mean (Standard Deviation) | Median |
Average number of hours of use per day | 4.42 (+/−3.79) | 3.0 | 0.57 (+/−1.12) | 0.0 | 3.97 (+/−2.92) | 4.0 | 1.23 (+/−1.86) | 1.0 |