2. Parity.
| Trial ID | ||||
| Discontinuation | Continuation | |||
| Nulliparous % (n) | Parous % (n) | Nulliparous % (n) | Parous % (n) | |
| Bahadoran 2011 | Not reported | |||
| Begum 2013 | Not reported | |||
| Bor 2016 | 46% (n = 46) | 54% (n = 54) | 45% (45) | 55% (55) |
| Chookijkul 2016 | 59.4% (n = 101) | 40.6% (n = 69) | 58.8% (100) | 41.2% (70) |
| Chopra 2015 | 51% (n = 26) | 49% (n = 25) | 47% (25) | 53% (28) |
| Daniel‐Spiegel 2004 | Not sufficient reported | |||
| Diven 2012 | 51.2% (n = 64) | 48.8% (n = 61) | 49.6% (63) | 50.4% (64) |
| Ozturk 2015 | Not reported | |||
| Rashwan 2011 | Not sufficient reported | |||
| Ustunyurt 2007 | 67.9% (n = 114) | 32.1% (n = 54) | 63.2% (110) | 36.8% (64) |