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Table 1 Sample characteristics in each period

From: Safety of medication use during pregnancy in mainland China: based on a national health insurance database in 2015

 

Gestational stages

T1/

Entire pregnancy

T2

T3

Total

2896

5377

7946

Age, n (%)

 < 25

646 (22.3%)

1128 (21.0%)

1607 (20.2%)

 25–29

1282 (44.3%)

2393 (44.5%)

3601 (45.3%)

 30–34

688 (23.8%)

1316 (24.5%)

1935 (24.4%)

 ≥ 35

280 (9.7%)

540 (10.0%)

803 (10.1%)

Area, n (%)

 Eastern

1621 (56.0%)

3235 (60.2%)

4833 (60.8%)

 Mid-western

1275 (44.0%)

2142 (39.8%)

3113 (39.2%)

Insurance type, n (%)

 URBMI

2170 (74.9%)

3947 (73.4%)

5833 (73.4%)

 UEBMI

726 (25.1%)

1430 (26.6%)

2113 (26.6%)

Deliver type, n (%)

 Natural delivery

1795 (62.0%)

3362 (62.5%)

4981 (62.7%)

 Other

1101 (38.0%)

2015 (37.5%)

2965 (37.2%)

  1. URBMI Urban Resident Basic Medical Insurance
  2. UEBMI Urban Employee Basic Medical Insurance