Table 2

Parity/age categories and their median and range of prevalence across included cohort studies

Nulliparous

Parity 1-2 (reference)

Parity ≥3


Age <18

Median: 7.37%

Range: 0.13-12.74%

N*=9

Median: 0.76%

Range: 0.01-2.65%

N=0

Median: 0.00

Range: 0.00-0.22%

N=0


Age 18-<35

(reference)

Median: 28.27%

Range: 1.20-43.72%

N=14

Median: 39.93%

Range: 33.28-51.50%

N=14

Median: 13.42%

Range: 7.17-35.64%

N=14


Age ≥35

Median: 0.08%

Range: 0.00-1.54%

N=0

Median: 0.71%

Range: 0.00-6.30%

N=2

Median: 5.52%

Range: 0.17-9.19%

N=7


Median and Range are described across all 14 cohort studies.

*The Ns indicated reflects how many studies out of the 14 included studies have ≥5% prevalence in that category.

Kozuki et al. BMC Public Health 2013 13(Suppl 3):S2   doi:10.1186/1471-2458-13-S3-S2

Open Data