Valdes V, Labbok MH, Pugin E, Perez A. The efficacy of the Lactational Amenorrhea Method (LAM) among working women. Contraception 2000; 62: 217–9.
Key Results
Among working women, the efficacy of LAM is found to be 5.2%, whereas the previous study of non-working women yielded an efficacy of 0.45%.
Conclusion
Our recommendation is that returning to work should be considered a risk factor in the use of LAM and women should be informed of this.