Year | Total births (n = 49,479) | Multiparas (%) | Age ≥ 35 years (%) | High BMIa (%) | ART pregnancy (%) | Tertiary educationb (%) |
---|---|---|---|---|---|---|
2005 | 1941 | 10.6 | 6.5 | 5.4(78/1453) | 0.2 | 22.9(443/1932) |
2006 | 2278 | 13.6 | 7.7 | 6.9(121/1751) | 0.2 | 43.7(996/2278) |
2007 | 3011 | 10.1 | 7.9 | 6.7(173/2565) | 0.1 | 40.5(1209/2983) |
2008 | 2968 | 12.4 | 8.9 | 5.6(151/2687) | 0.4 | 37.2(1102/2960) |
2009 | 2806 | 12.2 | 9.7 | 5.8(161/2781) | 0.4 | 40.1(1123/2799) |
2010 | 2900 | 13.7 | 11.3 | 6.7(193/2884) | 0.6 | 43.9(1268/2891) |
2011 | 3267 | 15.8 | 12.0 | 7.5(244/3246) | 0.7 | 45.3(1481/3267) |
2012 | 4140 | 16.1 | 10.7 | 6.9(286/4118) | 0.5 | 48.4(2005/4140) |
2013 | 4000 | 20.5 | 13.1 | 8.7(347/3983) | 0.6 | 49.8(1991/4000) |
2014 | 5096 | 22.6 | 12.4 | 9.1(463/5085) | 0.3 | 55.5(2829/5094) |
2015 | 4595 | 32.8 | 16.5 | 10.3(473/4578) | 0.5 | 57.1(2617/4581) |
2016 | 6700 | 35.2 | 17.2 | 10.8(721/6700) | 1.3 | 61.0(4085/6700) |
2017 | 5777 | 50.8 | 24.3 | 12.5(721/5749) | 2.10 | 78.2(4516/5777) |
Difference | P < 0.001 | P < 0.001 | P < 0.001 | P < 0.001 | P < 0.001 | P < 0.001 |
Correlation | P < 0.001 | P < 0.001 | P < 0.001 | P < 0.001 | P < 0.001 | P < 0.001 |