Table 2.
Baseline 2001 | Follow-up 2004 | |||||
---|---|---|---|---|---|---|
Participants | Participated and accepted linkage of data 2 |
Participants who accepted linkage of data 2 and provide DNA 3 |
||||
N | n | % | n | % | ||
Oslo | ||||||
Total4 | 3811 | 2489 | 65.3 | 2433 | 97.7 | |
Ethnicity6: | ||||||
Norway/western | Girls | 1424 | 1103 | 77.5 | 1078 | 97.7 |
Boys | 1456 | 906 | 62.2 | 893 | 98.6 | |
Non-western | Girls | 422 | 261 | 61.8 | 249 | 95.4 |
Boys | 425 | 192 | 45.2 | 186 | 96.9 | |
Hedmark | ||||||
Total5 | 1939 | 827 | 42.7 | 796 | 96.3 | |
Ethnicity7: | ||||||
Norway/western | Girls | 950 | 494 | 52.0 | 477 | 96.6 |
Boys | 931 | 317 | 34.0 | 303 | 95.6 | |
Non-western | Girls | 17 | 6 | 35.3 | 6 | 100.0 |
Boys | 25 | 9 | 36.0 | 9 | 100.0 |
1Participated both in the baseline study 2001 and in the follow-up 2004;
2Participants accepting linkage of data to other health surveys and registers, i.e. linkage of data to the baseline data;
3 Percent providing DNA among participants accepting linkage of data; 4,5Due to missing data in Oslo on gender and/or ethnicity (84), and in Hedmark on ethnicity (16), the numbers will not sum up to the total numbers in Oslo, nor Hedmark; 6,7Based on self-reported native country of mother and father.