Table 1.
Residual missing data after correction in Brussels birth certificates in 2008 and 2009
| Variable | % missing data in 2008 (N = 23375) | % missing data in 2009 (N = 24157) |
|---|---|---|
|
Pregnancy and infant characteristics | ||
| Date of birth |
0.00 |
0.00 |
| Sex |
0.02 |
0.00 |
| Plurality and birth order |
0.00 |
0.00 |
| Presentation |
0.44 |
0.19 |
| Induction |
0.22 |
0.09 |
| Mode of delivery |
0.00 |
0.12 |
| Gestational age |
0.28 |
0.28 |
| Birthweight |
0.18 |
0.24 |
| Respiratory assistance |
15.50 |
0.37 |
| 1 minute Apgar score |
0.26 |
0.35 |
| 5 minute Apgar score |
0.27 |
0.36 |
| Transfer to NICU |
15.50 |
0.94 |
| Parity |
0.74 |
0.12 |
| Date of the last delivery |
10.15 |
10.54 |
| Hypertension |
0.00 |
0.00 |
| Diabetes |
0.00 |
0.00 |
| Birth defect |
0.03 |
0.26 |
| Place of delivery |
0.00 |
0.00 |
| Type of maternity |
0.00 |
0.00 |
|
Mother characteristics | ||
| Birth date |
0.05 |
0.00 |
| Educational level |
9.48 |
6.46 |
| Employment status |
1.06 |
0.90 |
| Type of work |
1.45 |
1.27 |
| Original nationality |
2.56 |
0.02 |
| Present nationality |
0.07 |
0.01 |
| Cohabitation status |
0.55 |
0.26 |
| Marital status |
0.15 |
0.11 |
| Date of marriage |
0.40 |
0.12 |
| Residence |
0.09 |
0.00 |
|
Father characteristics | ||
| Birth date |
1.18 |
0.71 |
| Educational level |
7.57 |
5.63 |
| Employment status |
1.96 |
1.37 |
| Type of work |
1.88 |
1.43 |
| Original nationality |
10.70 |
0.77 |
| Present nationality | 1.44 | 0.74 |
NICU, Neonatal Intensive Care Unit.