Table 3.
Duration of active phase, parous (≥1) women.
|
Parous women | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Study | N | Study quality | Cervical dilatation on admission (cm) | Amniotomy (%) | Oxytocin (%) | Epidural (%) | Definition of starting and ending reference points | Median duration (h) | 5th percentile (h) | 95th percentile (h) |
| Zhang 2010 (1)11(P = 1) | 6373 | B | 3.5** | NR | 20.0 | 11 | From 4 to 10 cm | 2.4 | – | 13.8 |
| Zhang 2010 (1)11(P ≥ 2) | 11765 | B | 3.5** | NR | 12.0 | 8 | From 4 to 10 cm | 2.2 | – | 14.2 |
| Oladapo 2018-434(P = 1) | 491 | A | 4** | NR | 29.8* | 0.1 | From 4 to 10 cm | 4.6 | 1.7 | 13.0 |
| Oladapo 2018-534(P ≥ 2) | 626 | A | 4** | NR | 26.7* | 0.0 | From 4 to 10 cm | 4.7 | 1.7 | 13.0 |
| Oladapo 2018-634(P = 1) | 292 | A | 5** | NR | 29.8* | 0.1 | From 5 to 10 cm | 3.4 | 1.2 | 10.1 |
| Oladapo 2018-734(P ≥ 2) | 385 | A | 5** | NR | 26.7* | 0.0 | From 5 to 10 cm | 3.1 | 0.9 | 10.8 |
| Oladapo 2018-834(P = 1) | 320 | A | 6** | NR | 29.8* | 0.1 | From 6 to 10 cm | 2.2 | 0.6 | 7.5 |
| Oladapo 2018-934(P ≥ 2) | 414 | A | 6** | NR | 26.7* | 0.0 | From 6 to 10 cm | 2.4 | 0.8 | 7.4 |
| Mean duration (h) | SD (h) | +2SD (h) | ||||||||
| Schiff 199838 | 94 | B | 3.5*** | NR | NR | NR | From 4 to 10 cm | 3.3 | 1.9 | 7.1* |
| Albers 199917 | 1705 | A | 4*** | 0.0 | 0.0 | 0.0 | From 4 to 10 cm | 5.6 | 4.1 | 13.8 |
| Jones 200328 | 120 | B | 4*** | NR | 0.0 | 0.0 | From 4 to 10 cm | 4.4 | 3.4 | 11.6 |
| Albers 199617 | 602 | C | 4*** | NR | NR | NR | From 4 to 10 cm | 5.7 | 4.0 | 13.7 |
| Velasco 198543 | 37 | B | NR | 0.0 | 0.0 | 0.0 | From 4 to 10 cm | 2.1 | 1.4 | 4.9* |
| Juntunen 199429(P = 2/3) | 42 | B | NR | 69.0 | 0.0 | 2.4 | From 4 to 10 cm | 2.7 | 1.4 | 5.5* |
| Juntunen 199429(GP) | 42 | B | NR | 71.4 | 0.0 | 9.5 | From 4 to 10 cm | 2.8 | 1.5 | 5.8* |
| Schorn 199328 | 30 | B | 5.3*** | NR | 18 | NR | NR | 13.2 | 5.3 | 23.9 |
| Kilpatrick 198930 | 3767 | C | NR | NR | NR | 0.0 | NR | 5.7 | 3.4 | 12.5 |
Risk of bias: A = at least four (out of five) domains scored as low risk; B = three domains scored as low risk; C = two domains or less scored as low risk.
SD = Standard deviation.
NR = Not reported.
P = Parity.
GP = Grand parity.
h = h.
*
Estimated by authors.
**
Median.
***
Mean.