Table 1.
Clinical characteristics and prevalence of hyperglycemia in pregnancy in pregnant women in Taiwan in 2008-2017.
| 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | P for trend | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Number | 179,881 | 175,302 | 151,306 | 179,607 | 211,768 | 176,776 | 192,206 | 195,612 | 189,580 | 178,473 | |
| Age (years) | 29.84 ± 4.71 | 30.20 ± 4.64 | 30.62 ± 4.77 | 30.86 ± 4.63 | 31.03 ± 4.61 | 31.33 ± 4.80 | 31.47 ± 4.78 | 31.59 ± 4.88 | 31.75 ± 4.98 | 31.86 ± 5.09 | <0.001 |
| Age ≥35 years old (N) | 28,382 | 29,666 | 30,442 | 38,021 | 46,399 | 44,950 | 50,703 | 55,057 | 57,671 | 57,343 | |
| Age ≥35 years old (%) | 15.8 | 16.9 | 20.1 | 21.2 | 21.9 | 25.4 | 26.4 | 28.1 | 30.4 | 32.1 | <0.001 |
| Gestational weeks (weeks) | 38.20 | 38.23 | 38.17 | 38.18 | 38.19 | 38.17 | 38.16 | 38.13 | 38.08 | 38.08 | <0.001 |
| Comorbidity (%) | |||||||||||
| Hypertension | 3.3 | 3.5 | 3.6 | 3.4 | 3.5 | 3.8 | 3.5 | 3.8 | 4.1 | 4.6 | <0.05 |
| Polycystic ovary syndrome | 1.1 | 1.2 | 1.4 | 1.0 | 1.1 | 1.1 | 1.2 | 1.5 | 1.6 | 2.0 | <0.05 |
| Prevalence (%) | |||||||||||
| Preexisting diabetes (%) | 0.5 | 0.7 | 0.8 | 0.7 | 0.7 | 0.8 | 0.9 | 0.9 | 0.9 | 0.9 | <0.05 |
| Undiagnosed diabetes (%) | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.4 | <0.05 |
| GDM (%) | 11.4 | 12.6 | 13.3 | 14.0 | 14.1 | 14.7 | 15.2 | 16.0 | 14.7 | 14.5 | <0.05 |
*Preexisting diabetes mellitus, diabetes diagnosed before pregnancy; undiagnosed diabetes, diabetes mellitus first detected in early pregnancy, before 20 weeks of gestation; GDM, gestational diabetes mellitus.