Table 2. Comparison of the Frequency of Active Current and Ever Smoking in Iranian Children and Adolescents According to the age Group: The Caspian-IV Studya.
| Variables | Age Group, y | ||||
|---|---|---|---|---|---|
| 6 - 9.9 | 10 - 13.9 | 14 - 18 | Total | P Value | |
| Ever smoking | |||||
| Boys | 2.04 (1.45, 2.88) | 4.1 (3.16, 5.30) | 16.92 (14.74, 19.35) | 7.48 (6.55, 8.54) | < 0.001 |
| Girls | 1.32 (0.88, 1.98) | 2.98 (2.29, 3.88) | 7.98 (6.63, 9.58) | 4.19 (3.60, 4.87) | < 0.001 |
| Total | 1.7 (1.31, 2.22) | 3.55 (2.94, 4.27) | 12.35 (11.01, 13.82) | 5.86 (5.29, 6.49) | < 0.001 |
| Current smoking | |||||
| Boys | 0.56 (0.33, 0.97) | 1.31 (0.88, 1.94) | 8.97 (7.45, 10.75) | 3.49 (2.91, 4.19) | < 0.001 |
| Girls | 0.44 (0.23, 0.83) | 1.04 (0.67, 1.60) | 3.38 (2.57, 4.42) | 1.66 (1.32, 2.08) | < 0.001 |
| Total | 0.51 (0.34, 0.76) | 1.18 (0.88, 1.57) | 6.11 (5.21, 7.14) | 2.59 (2.24, 2.99) | < 0.001 |
aValues are expressed as % (95% CI).