Table 1.
Summary statistics of contact frequency (contacts/h) of hand-to-head (all), -mouth, -eyes, -nose, and -other for adults vs. children during eating and non-eating macro-activities including 5th, 25th, 50th, 75th, 95th, and 99th percentiles.
| Age | Facial feature | Range (Min, Max) | Mean ± SD | 5th | 25th | 50th | 75th | 95th | 99th |
|---|---|---|---|---|---|---|---|---|---|
| Eating macro-activity | |||||||||
| Children (n = 3) | Mouth | (4.0, 10.0) | 7.3 ± 3.1 | 4.4 | 6.0 | 8.0 | 9.0 | 9.8 | 10.0 |
| Eyes | (2.0, 4.0) | 2.7 ± 1.2 | 2.0 | 2.0 | 2.0 | 3.0 | 3.8 | 4.0 | |
| Nose | (0.0, 6.0) | 2.0 ± 3.5 | 0.0 | 0.0 | 0.0 | 3.0 | 5.4 | 5.9 | |
| Other | (2.0, 2.0) | 2.0 ± 0.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | |
| All | (8.0, 20.0) | 14.0 ± 6.0 | 8.6 | 11.0 | 14.0 | 17.0 | 19.4 | 20.0 | |
| Adults (n = 19) | Mouth | (2.0, 14.0) | 7.7 ± 4.1 | 2.0 | 4.0 | 6.0 | 11.0 | 14.0 | 14.0 |
| Eyes | (0.0, 10.0) | 2.1 ± 2.8 | 0.0 | 0.0 | 0.0 | 4.0 | 6.4 | 9.3 | |
| Nose | (0.0, 8.0) | 2.4 ± 2.2 | 0.0 | 1.0 | 2.0 | 4.0 | 6.2 | 7.6 | |
| Other | (0.0, 16.0) | 7.6 ± 4.5 | 1.8 | 4.0 | 8.0 | 10.0 | 14.2 | 15.6 | |
| All | (6.0, 32.0) | 19.8 ± 7.8 | 7.8 | 14.0 | 20.0 | 24.0 | 32.0 | 32.0 | |
| Non-eating macro-activity | |||||||||
| Children (n = 61) | Mouth | (0.0, 14.0) | 4.7 ± 3.4 | 0.0 | 2.0 | 4.0 | 6.0 | 10.0 | 12.8 |
| Eyes | (0.0, 14.0) | 3.7 ± 2.8 | 0.0 | 2.0 | 4.0 | 6.0 | 8.0 | 10.4 | |
| Nose | (0.0, 16.0) | 5.7 ± 3.1 | 2.0 | 4.0 | 6.0 | 8.0 | 12.0 | 13.6 | |
| Other | (0.0, 12.0) | 4.8 ± 2.6 | 2.0 | 2.0 | 4.0 | 6.0 | 10.0 | 10.8 | |
| All | (8.0, 36.0) | 18.9 ± 5.6 | 10.0 | 16.0 | 18.0 | 22.0 | 28.0 | 34.8 | |
| Adults (n = 180) | Mouth | (0.0, 10.0) | 2.9 ± 2.5 | 0.0 | 0.0 | 2.0 | 4.0 | 8.0 | 10.0 |
| Eyes | (0.0, 8.0) | 2.4 ± 1.9 | 0.0 | 0.0 | 2.0 | 4.0 | 6.0 | 6.0 | |
| Nose | (0.0, 14.0) | 2.5 ± 2.2 | 0.0 | 2.0 | 2.0 | 4.0 | 6.0 | 10.4 | |
| Other | (0.0, 18.0) | 6.2 ± 3.0 | 2.0 | 4.0 | 6.0 | 8.0 | 10.0 | 14.4 | |
| All | (0.0, 30.0) | 14.0 ± 5.4 | 5.9 | 10.0 | 14.0 | 18.0 | 22.0 | 26.8 | |
| All macro-activities | |||||||||
| Children (n = 64) | Mouth | (0.0, 14.0) | 4.8 ± 3.4 | 0.0 | 2.0 | 4.0 | 6.5 | 10.0 | 12.7 |
| Eyes | (0.0, 14.0) | 3.7 ± 2.8 | 0.0 | 2.0 | 4.0 | 4.5 | 8.0 | 10.2 | |
| Nose | (0.0, 16.0) | 5.5 ± 3.2 | 0.0 | 4.0 | 6.0 | 8.0 | 11.7 | 13.5 | |
| Other | (0.0, 12.0) | 4.7 ± 2.6 | 2.0 | 2.0 | 4.0 | 6.0 | 9.7 | 10.7 | |
| All | (8.0, 36.0) | 18.7 ± 5.6 | 8.3 | 16.0 | 18.1 | 22.0 | 27.7 | 34.7 | |
| Adults (n = 199) | Mouth | (0.0,14.0) | 3.4 ± 3.1 | 0.0 | 0.0 | 2.0 | 4.0 | 10.0 | 12.0 |
| Eyes | (0.0, 10.0) | 2.3 ± 2.0 | 0.0 | 0.0 | 2.0 | 4.0 | 6.0 | 6.0 | |
| Nose | (0.0, 14.0) | 2.5 ± 2.2 | 0.0 | 2.0 | 2.0 | 4.0 | 6.0 | 10.0 | |
| Other | (0.0, 18.0) | 6.3 ± 3.2 | 2.0 | 4.0 | 6.0 | 8.0 | 12.0 | 16.0 | |
| All | (0.0, 32.0) | 14.6 ± 5.9 | 6.0 | 10.0 | 14.0 | 18.0 | 22.2 | 30.0 | |