| % | Good sleep quality (%) | p-value | Very good sleep efficiency (%) | p-value |
---|---|---|---|---|---|
TV | |||||
 No access and no use | 53.7 | 36.3 | 0.67 | 94.5 | 0.01 |
 Access but never used | 14.2 | 35.9 |  | 96.4 |  |
 Access and used | 20.1 | 32.1 |  | 90.8 |  |
  aNo access and used | 12.0 | 32.4 |  | 94.7 |  |
Computer | |||||
 No access and no use | 54.5 | 36.4 | 0.17 | 94.5 | 0.71 |
 Access but never used | 13.8 | 31.5 |  | 93.1 |  |
 Access and used | 12.3 | 30.1 |  | 93.1 |  |
  aNo access and used | 19.4 | 36.2 |  | 93.5 |  |
Tablet | |||||
 No access and no use | 52.3 | 36.2 | 0.67 | 94.3 | 0.64 |
 Access but never used | 10.2 | 32.7 |  | 93.7 |  |
 Access and used | 16.3 | 35.0 |  | 92.5 |  |
  aNo access and used | 21.2 | 33.5 |  | 94.3 |  |
Video Games | |||||
 No access and no use | 60.9 | 36.3 | 0.77 | 95.1 | 0.01 |
 Access but never used | 15.9 | 31.6 |  | 94.6 |  |
 Access and used | 10.3 | 34.2 |  | 91.9 |  |
  aNo access and used | 12.9 | 35.0 |  | 90.6 |  |
Cell Phone | |||||
 No access and no use | 59.0 | 36.6 | 0.10 | 95.1 | 0.03 |
 Access but never used | 23.1 | 33.2 |  | 93.1 |  |
 Access and used | 11.8 | 28.9 |  | 90.6 |  |
  aNo access and used | 6.1 | 38.8 |  | 94.6 |  |
At least one device | |||||
 No access and no use | 12.2 | 35.5 | 0.29 | 94.9 | 0.06 |
 Access but never used | 17.8 | 36.9 |  | 95.7 |  |
 Access and used | 56.4 | 33.1 |  | 92.8 |  |
  aNo access and used | 13.6 | 39.1 |  | 96.0 |  |
Reading | |||||
 No access and frequent reading | 19.9 | 38.4 | <0.001 | 96.3 | 0.01 |
 Access but frequent reading | 52.9 | 37.5 |  | 94.5 |  |
 Access and rarely reading | 21.2 | 25.9 |  | 91.0 |  |
 No access and rarely reading | 6.0 | 34.1 |  | 92.7 |  |