Table 1.
Cohort and birth characteristics of all women by gestational age groups by year from 1990 to 2019 in Matlab, Bangladesh*
| Gestational age in weeks at birth (n = 72 373) |
|||||||
|---|---|---|---|---|---|---|---|
|
Characteristics
|
Total birth (28–44)
|
Pre-term (<37)
|
Early-term (37–38)
|
Full-term (39–40)
|
Late-term (41)
|
Post-term (42–44)
|
P-value† |
| Total |
72 373 (100.0) |
13 033 (18.0) |
19 778 (27.3) |
28 632 (39.6) |
6853 (9.5) |
4077 (5.6) |
|
| Maternal age in years |
|
|
|
|
|
|
<0.001 |
|
<20
|
14 031 (19.4) |
2426 (18.6) |
3387 (17.1) |
5890 (20.6) |
1488(21.7) |
840 (20.6) |
|
|
20–24
|
23 618 (32.6) |
4005 (30.7) |
6176 (31.2) |
9675 (33.8) |
2430 (35.5) |
1332 (32.7) |
|
|
25–29
|
18 654 (25.8) |
3153 (24.2) |
5384 (27.2) |
7289 (25.5) |
1729 (25.2) |
1099 (27.0) |
|
|
≥30
|
16 070 (22.2) |
3449 (26.5) |
4831 (24.4) |
5778 (20.2) |
1206 (17.6) |
806 (20.0) |
|
| Education in years |
|
|
|
|
|
|
<0.001 |
|
0
|
19 967 (27.6) |
4993 (38.3) |
5496 (27.8) |
6560 (22.9) |
1647 (24.0) |
1271 (31.2) |
|
|
1–5
|
18 020 (24.9) |
3633 (27.9) |
4937 (25.0) |
6735 (23.5) |
1617 (23.6) |
1098 (26.9) |
|
|
6–10
|
31 114 (43.0) |
4089 (31.4) |
8380 (42.4) |
13 806 (48.2) |
3245 (47.4) |
1594 (39.1) |
|
|
≥11
|
3272 (4.5) |
318 (2.4) |
965 (4.9) |
1531 (5.4) |
344 (5.0) |
114 (2.8) |
|
| Wealth quintiles |
|
|
|
|
|
|
<0.001 |
|
1-poorest
|
12 981 (17.9) |
2656 (20.4) |
3505 (17.7) |
4827 (16.9) |
1195 (17.4) |
798 (19.6) |
|
|
2
|
12 724 (17.6) |
2461 (18.9) |
3560 (18.0) |
4827 (16.9) |
1175 (17.1) |
701 (17.2) |
|
|
3
|
14 283 (19.7) |
2594 (19.9) |
3875 (19.6) |
5655 (19.8) |
1346 (19.6) |
813 (19.9) |
|
|
4
|
15 666 (21.6) |
2709 (20.8) |
4276 (21.6) |
6264 (21.9) |
1500 (21.9) |
917 (22.5) |
|
|
5-wealthiest
|
16 719 (23.1) |
2613 (20) |
4562 (23.1) |
7059 (24.7) |
1637 (23.9) |
848 (20.8) |
|
| Parity |
|
|
|
|
|
|
<0.001 |
|
0
|
26 988 (37.3) |
4467 (34.3) |
6457 (32.6) |
11 517 (40.2) |
2997 (43.7) |
1550 (38.0) |
|
|
1
|
20 534 (28.4) |
3323 (25.5) |
6134 (31.0) |
8154 (28.5) |
1802 (26.3) |
1121 (27.5) |
|
|
≥2
|
24 851 (34.3) |
5243 (40.2) |
7187 (36.3) |
8961 (31.3) |
2054 (30.0) |
1406 (34.5) |
|
| Pregnancy outcome |
|
|
|
|
|
|
<0.001 |
|
Stillbirth
|
1559 (2.2) |
631 (4.8) |
308 (1.6) |
381 (1.3) |
131 (1.9) |
108 (2.6) |
|
|
Livebirth
|
70 814 (97.8) |
12 402 (95.2) |
19 470 (98.4) |
28 251 (98.7) |
6722 (98.1) |
3969 (97.4) |
|
| Perinatal death |
|
|
|
|
|
|
<0.001 |
|
No
|
69 584 (96.1) |
11 830 (90.8) |
19 265 (97.4) |
27 981 (97.7) |
6626 (96.7) |
3882 (95.2) |
|
|
Yes
|
2789 (3.9) |
1203 (9.2) |
513 (2.6) |
651 (2.3) |
227 (3.3) |
195 (4.8) |
|
| Delivery type‡ |
|
|
|
|
|
|
<0.001 |
|
Vaginal delivery
|
25 134 (69.6) |
3076 (69.8) |
6670 (65.4) |
11 543 (71.7) |
2591 (69.5) |
1254 (74.4) |
|
|
Caesarean section
|
10 988 (30.4) |
1328 (30.2) |
3528 (34.6) |
4561 (28.3) |
1139 (30.5) |
432 (25.6) |
|
| Birth year |
|
|
|
|
|
|
<0.001 |
|
1990–99
|
23 793 (32.9) |
6230 (47.8) |
6345 (32.1) |
7815 (27.3) |
1920 (28) |
1483 (36.4) |
|
|
2000–09
|
24 478 (33.8) |
4063 (31.2) |
6333 (32.0) |
9617 (33.6) |
2675 (39) |
1790 (43.9) |
|
| 2010–19 | 24 102 (33.3) | 2740 (21.0) | 7100 (35.9) | 11 200 (39.1) | 2258 (32.9) | 804 (19.7) | |
*Presented as n (%) unless specified otherwise.
†Based on χ2 tests between gestational age groups.
‡Available from 2005.