National Irish data for VLBW and ELBW births based on the published CSO and VON numbers
| Year | Live births | CSO national data | VON national data | ||||||
| ELBW | VLBW | ELBW | VLBW | ||||||
| Count | Rate/1000 | Count | Rate/1000 | Count | Rate/1000 | Count | Rate/1000 | ||
| 2011 | 74 033 | 226 | 3.05 | 599 | 8.09 | ||||
| 2012 | 71 674 | 259 | 3.61 | 653 | 9.11 | ||||
| 2013 | 68 954 | 265 | 3.84 | 653 | 9.47 | ||||
| 2014 | 67 295 | 218 | 3.24 | 576 | 8.56 | 226 | 3.36 | 596 | 8.86 |
| 2015 | 65 536 | 214 | 3.27 | 585 | 8.93 | 221 | 3.37 | 622 | 9.49 |
| 2016 | 63 841 | 247 | 3.87 | 584 | 9.15 | 250 | 3.92 | 593 | 9.29 |
| 2017 | 61 824 | 222 | 3.59 | 575 | 9.30 | 238 | 3.85 | 612 | 9.90 |
CSO, Central Statistics Office; ELBW, extremely low birth weight; VLBW, very low birth weight; VON, vermont oxford network.