Study | Sponsorship | Intervention | Methods | |||
---|---|---|---|---|---|---|
Randomization | Allocation concealment | Blinding | Intention to treat analysis | |||
Affinito [18] | Pharmaceutical company | GSD vs NGM | unclear | unclear | not | unclear |
Droegemüller [8] | No information | LNG vs NE | unclear | unclear | not | yes |
Dunson [12] | Family Health International | NG vs NE | unclear | adequate | not | not |
Endrikat [19] | Pharmaceutical company | GSD vs DSG | unclear | unclear | not | yes |
Endrikat [20] | Pharmaceutical company | LNG vs NE | unclear | unclear | not | yes |
Foidart [26] | Pharmaceutical company | DSG vs DRSP | unclear | unclear | not | unclear |
GSD group [13] | Pharmaceutical company | GSD vs DSG | unclear | unclear | not | yes |
Halbe [29] | Pharmaceutical company | GSD vs DSG | unclear | unclear | not | yes |
Huber [10] | Pharmaceutical company | DSG vs DRSP | unclear | unclear | not | yes |
Koetsawang [28] | Pharmaceutical company | GSD vs DSG | unclear | unclear | not | unclear |
L. America [27] | Pharmaceutical company | GSD vs DSG | block randomisation | unclear | not | yes |
Loudon [17] | No information | GSD vs LNG | unclear | unclear | double blind | unclear |
Percival [23] | Pharmaceutical company | NG vs NE | random list | unclear | investigator blind | unclear |
Rabe [14] | Pharmaceutical company | GSD vs LNG | unclear | unclear | not | yes |
Ramos [22] | Pharmaceutical company and UNFPA | LNG vs NE | unclear | unclear | double blind | yes |
Reiter [21] | Planned Parenthood Centers | NG vs NE | unclear | unclear | not | unclear |
Rossmanith [9] | Pharmaceutical company | DSG vs NE | unclear | unclear | double blind | yes |
Serfaty [16] | Pharmaceutical company | GSD vs DSG | block randomisation | unclear | not | unclear |
Shoupe [15] | Pharmaceutical company | DSG vs NE | computer generated random number tables | adequate | double blind | unclear |
Singh [24] | Pharmaceutical company | DSG vs NE | unclear | unclear | not | yes |
Weber-Diehl [25] | Pharmaceutical company | GSD vs NE | unclear | unclear | not | unclear |
Zichella [11] | Pharmaceutical company | GSD vs DSG | unclear | unclear | unclear | yes |