Table 4.
Secular trends of mean birth weight and its relative difference according to maternal educational attainment, 1996–2013 (Source: MS/SVS/DASIS - Information System on Live Births).
| Year of birth | Birth weight (g) | Birth weight (g), stratified by maternal educational attainment | Relative difference (%) | |
|---|---|---|---|---|
| <8 years | ≥12 years | |||
| 1996 | 3188 (528.4) | 3160 (532.3) | 3251 (504.6) | 2.87 |
| 1997 | 3179 (532.1) | 3162 (537.4) | 3217 (506.4) | 1.73 |
| 1998 | 3173 (530.1) | 3155 (536.7) | 3208 (504.0) | 1.67 |
| 1999 | 3183 (529.4) | 3169 (534.7) | 3209 (507.6) | 1.26 |
| 2000 | 3186 (530.2) | 3173 (534.2) | 3213 (517.1) | 1.26 |
| 2001 | 3176 (530.6) | 3166 (537.6) | 3202 (507.9) | 1.13 |
| 2002 | 3172 (531.5) | 3161 (539.9) | 3194 (510.9) | 1.04 |
| 2003 | 3161 (530.8) | 3149 (536.9) | 3183 (512.9) | 1.07 |
| 2004 | 3167 (534.5) | 3155 (545.5) | 3188 (512.7) | 1.04 |
| 2005 | 3177 (535.7) | 3167 (547.5) | 3189 (511.5) | 0.69 |
| 2006 | 3181 (540.6) | 3173 (554.5) | 3187 (514.3) | 0.44 |
| 2007 | 3180 (537.7) | 3173 (551.9) | 3181 (513.6) | 0.25 |
| 2008 | 3184 (540.4) | 3173 (556.9) | 3188 (514.8) | 0.47 |
| 2009 | 3181 (541.6) | 3170 (559.4) | 3182 (515.0) | 0.37 |
| 2010 | 3179 (537.7) | 3165 (557.3) | 3180 (511.1) | 0.47 |
| 2011 | 3180 (537.8) | 3166 (560.0) | 3171 (509.0) | 0.15 |
| 2012 | 3187 (540.5) | 3170 (562.2) | 3178 (507.5) | 0.25 |
| 2013 | 3187 (538.7) | 3166 (563.4) | 3179 (505.9) | 0.41 |
| Overall | 3179 (535.0) | 3164 (544.1) | 3189 (511.3) | 0.78 |
Data given as mean (SD) unless otherwise noted.