I'm going to try to answer you in proper French.
Based on the data we have on treating post-traumatic stress, be it through cognitive behavioural approaches or medication, the best we can expect is a 40% to 60% success rate. I'm not talking about remission here, but really a response to treatment. The success rate with the placebo is between 30% and 40%. Right now, treatment strategies for post-traumatic stress syndrome can improve symptoms, but full remission is rare. The same thing is true for depression.
According to a study published recently by Colleen Carney, when treatment for a sleep problem is combined with treatment for post-traumatic stress, considerable improvement is seen in the response rate and remission. Studies to date are too small for us to draw definitive conclusions. However, based on studies conducted so far, there is one area that has some potential, and it involves knowing whether the combination of treatment for a sleep problem and treatment of other symptoms, such as symptoms of post-traumatic stress, would result in a better success rate, not just for the response but for complete remission, as well.
Post-traumatic stress syndrome is not simply having anxiety in response to various stimuli while you are awake. It really is a sleeping and wakefulness problem. We should test treatments that manage to treat symptoms experienced at night and during the day. I would expect that the success rates will be much higher than they are currently.