KiGGS baseline study (2003-06) | KiGGS Wave 1 (2009-12) | ||||
---|---|---|---|---|---|
(n = 6680) | (n = 4455) | ||||
na | %b | na | %b | ||
Age (years) | 0 | 935 | 11.6 | 634 | 11.6 |
1 | 925 | 14.4 | 641 | 14.3 | |
2 | 945 | 14.8 | 667 | 14.8 | |
3 | 934 | 14.8 | 601 | 14.8 | |
4 | 982 | 14.5 | 663 | 14.5 | |
5 | 953 | 14.8 | 633 | 14.8 | |
6 | 1006 | 15.1 | 616 | 15.2 | |
Sex | Boys | 3367 | 51.3 | 2290 | 51.3 |
Girls | 3313 | 48.7 | 2165 | 48.7 | |
Socioeconomic status (SES) | Low | 1023 | 19.6 | 359 | 17.5 |
Medium | 3926 | 58.4 | 2685 | 59.2 | |
High | 1654 | 22.0 | 1409 | 23.3 | |
Missings | 77 | - | 2 | - | |
Domestic secondhand smoke exposure | Daily | 465 | 8.9 | 52 | 2.4 |
Several times a week | 155 | 2.8 | 10 | 0.2 | |
Once a week | 46 | 0.7 | 16 | 0.3 | |
Less often | 686 | 11.4 | 109 | 3.6 | |
Never | 5210 | 76.1 | 4266 | 93.4 | |
Missings | 118 | - | 2 | - | |
Paternal smoking behaviour | Yes | 2593 | 42.0 | 1236 | 34.7 |
No | 3778 | 58.0 | 2914 | 65.3 | |
Missings | 309 | - | 305 | - | |
Maternal smoking behaviour | Yes | 1932 | 31.0 | 890 | 25.1 |
No | 4661 | 69.0 | 3555 | 74.9 | |
Missings | 87 | - | 10 | - | |
Parental smoking behaviour | Both parents smoke | 1256 | 21.0 | 484 | 15.4 |
One parent smokes | 1809 | 28.7 | 1019 | 26.4 | |
Neither parent smokes | 3273 | 50.2 | 2638 | 58.2 | |
Missings | 342 | - | 314 | - |