Cross tabulation of observations in BW categories by the CSHRR and the MBR for birth years 1979–1991
| MBR | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Birth weight groups (grams) | <1500 | 1500–1999 | 2000–2750 | 2751–3250 | 3251–3750 | 3751–4250 | 4251–5500 | >5500 | Total |
| CSHRR | |||||||||
| <1500 | 181 | 7 | 8 | 4 | 9 | 2 | 1 | 0 | 212 (0.7%) |
| 1500–1999 | 8 | 332 | 26 | 4 | 2 | 0 | 0 | 0 | 372 (1.3%) |
| 2000–2750 | 1 | 18 | 2 943 | 133 | 30 | 3 | 1 | 0 | 3129 (10.6%) |
| 2751–3250 | 2 | 0 | 99 | 7 954 | 317 | 29 | 1 | 0 | 8402 (28.4%) |
| 3251–3750 | 0 | 0 | 15 | 307 | 10 272 | 140 | 6 | 0 | 10 740 (36.3%) |
| 3751–4250 | 0 | 0 | 2 | 49 | 226 | 5 085 | 35 | 0 | 5397 (18.2%) |
| 4251–5500 | 0 | 0 | 1 | 12 | 28 | 79 | 1 231 | 0 | 1351 (4.6%) |
| >5500 | 0 | 0 | 0 | 1 | 1 | 1 | 4 | 3 | 10 (0%) |
| Total | 192 (0.6%) | 357 (1.2%) | 3 094 (10.4%) | 8 464 (28.6%) | 10 885 (36.8%) | 5343 (18.0%) | 1 279 (4.3%) | 3 (0%) | 29 613 |
| κ | 0.93 | ||||||||
| Agreement | 94.6% | ||||||||
| Expected agreement | 26.1% | ||||||||
BW, birth weight; CSHRR, Copenhagen School Health Records Register; MBR, Medical Birth Register.