Table 1.
Obstetric and sociodemographic characteristics and measurements of blood loss among women after vaginal delivery
| Characteristics | n | Mean ± SD |
|---|---|---|
| Age (in years) |
270 |
24.67 ± 6.19 |
| BMI* (In KG/m2) |
244 |
28.85 ± 4.61 |
| Parity |
270 |
0.80 ± 1.10 |
| Gestational age (in weeks) |
270 |
38.93 ± 1.47 |
| Mean percentage of BBV bled in 2 h† |
266 |
6.06 ± 4.61 |
| Mean percentage of BBV bled in 24 h‡ |
260 |
8.15 ± 4.99 |
| Initial Hb‡ (in g/dL) |
260 |
11.45 ± 0.10 |
| Final Hb§ (in g/dL) |
263 |
10.6 ± 1.58 |
| Hb variation among patients who bled ≥20% of BBV in 2 h (in g/dL) |
4 |
-1.32 ± 0.68 |
| Hb variation among patients who bled ≥20% of BBV in 24 h (in g/dL) |
6 |
-1.98 ± 1.15 |
|
Ethnicity:§ | ||
| White |
178 (67%) |
|
| Non-white |
85 (33%) |
|
|
Onset of labor: | ||
| Spontaneous |
203 (75.19%) |
|
| Induced |
67 (24.81%) |
|
|
Anesthesia/analgesia: | ||
| No |
100 (37%) |
|
| Yes |
170 (63%) |
|
|
Mode of delivery: | ||
| Vaginal |
247 (91.5%) |
|
| Forceps |
23 (8.5%) |
|
|
Episiotomy: | ||
| No |
174 (64%) |
|
| Yes |
96 (36%) |
|
|
Blood loss within 120 min of birth: | ||
| ≥500 mL |
84 (31%) |
|
| ≥1000 mL |
22 (8.2%) |
|
|
Blood loss within 24 h of birth: | ||
| ≥500 mL |
120 (44.5%) |
|
| ≥1000 mL | 35 (12.9%) | |
BBV – body blood volume, BMI – body mass index, h – hours, Hb – hemoglobin, SD – standard deviation
*Patient data missing from 26 patients.
†Patient data missing from 4 patients.
‡Patient data missing from 10 patients.
§Patient data missing from 7 patients.