Table 1.
Demographic variables PING data set
| Site | Sex | N | Mean age | (SD) | Age-range | |
|---|---|---|---|---|---|---|
| a | F | 57 | 15.394 | (4.354) | 4.080–21.000 | |
| M | 57 | 14.963 | (4.028) | 7.420–20.920 | n.s. | |
| b | F | 11 | 13.682 | (2.913) | 7.670–17.670 | |
| M | 17 | 10.612 | (3.603) | 5.580–15.920 | * | |
| c | F | 48 | 14.632 | (4.631) | 3.750–20.920 | |
| M | 62 | 14.712 | (3.735) | 5.420–21.000 | n.s. | |
| d | F | 59 | 12.453 | (5.426) | 3.170–20.750 | |
| M | 59 | 12.185 | (4.956) | 3.420–21.000 | n.s. | |
| e | F | 19 | 12.744 | (3.629) | 6.580–17.580 | |
| M | 25 | 12.567 | (3.131) | 6.330–16.830 | n.s. | |
| f | F | 57 | 13.296 | (6.149) | 3.670–20.920 | |
| M | 69 | 10.760 | (5.969) | 3.170–20.750 | * | |
| g | F | 115 | 10.360 | (4.984) | 3.080–20.500 | |
| M | 127 | 10.793 | (4.943) | 3.000–20.670 | n.s. | |
| h | F | 30 | 13.944 | (3.809) | 6.750–20.920 | |
| M | 35 | 13.155 | (4.875) | 4.170–20.000 | n.s. | |
| i | F | 68 | 8.459 | (3.401) | 3.250–17.830 | |
| M | 67 | 8.922 | (3.658) | 3.580–20.250 | n.s. | |
| j | F | 55 | 10.068 | (3.705) | 3.420–19.830 | |
| M | 65 | 11.224 | (3.927) | 3.420–21.000 | n.s. | |
| k | F | 9 | 7.730 | (1.49) | 6.080–11.000 | |
| M | 4 | 10.373 | (0.494) | 9.830–10.830 | ** | |
| l | F | 8 | 14.679 | (3.132) | 8.920–18.500 | |
| M | 6 | 14.360 | (4.832) | 8.830–20.750 | n.s. | |
| m | F | 55 | 13.549 | (4.271) | 6.080–20.670 | |
| M | 50 | 14.698 | (3.533) | 6.670–20.580 | n.s. | |
| Total | F | 591 | 12.074 | (5.046) | 3.080–21.000 | |
| M | 643 | 12.040 | (4.826) | 3.000–21.000 | n.s. |
F, females; M, males; SD, standard deviation; *P < 0.05; **P < 0.01; n.s., not significant.