As someone else wrote, just for clarification, I don't believe, think, or know that what we call BLS is the same as what our brothers and sisters in Kanuckistan call BLS. I also never wrote, stated, claimed, exclaimed, pontificated, or espoused that belief. As I've written before, if you can find a post in which I did so, please post it.
My comments about the study which did not take place in or around Pomona or even Ontario, California were very specific, I asked for people interested to read the summary of the OPALS that was written by the Medical Director of Ventura/Santa Barbara Counties and that was published in EMS Responder magazine, specifically the fifth and seventh paragraphs of the writers conclusions. If one were to do that, one would find that the writer is not comparing Canadian and U.S. BLS practices nor is it comparing Canadian and U.S. BLS practices vs ALS practices.
First off, thank you so much for providing a reference. At the very least, a link would have been appropriate, however, here you go.
http://www.emsresponder.com/print/EMS-Magazine/Literature-Review--Advanced-Life-Support-for-Major-Trauma-Patients/1$8060
To take OPALS and apply it to US
is saying that their BLS and our BLS is the same. Period. There is no discussing this fact. To take a study that, in the words of your article, "compared the outcomes of patients for three years in BLS systems and then for three years after introducing paramedics in ALS systems," and trying to advocate BLS treatments in the US is simply absurd without clarifying and discussing the differences between an EMT-B in the US and a primary care paramedic in Ontario (Canada) makes a critical error in analyzing this study.
Furthermore, you, at no time in the post where you brought this up, specified "trauma." This brings up a few major points. First, I can find articles that showed that it is safer for trauma patients to be transported by private vehicle than to wait for an ambulance. Should we stop sending ambulances to traumas since ambulances are associated with worse outcomes when compared to 'home boy ambulance service?' Second, even your article admits that "For minorly to moderately injured patients, an IV with analgesia is very appropriate." So, what should we do? Send EMT-Bs only to traumas and have them call for paramedics if they aren't going to die in the next 3 minutes?
Third (and this get's it's own segment), OPALS looks at more than cardiac arrest and trauma. Here's a gem at the end of one part of OPALS* that ties this entire thing together. "A program to administer medications for symptom relief (nebulized salbutamol and sublingual nitroglycerin) was introduced toward the end of the first phase of this study. Although this program was not specifically related to advanced life support, it may have been a factor that influenced the benefit in the second phase of the study." So the introduction of symptom relief might have been a factor, but looky here. It's salbutamol (albuterol) and nitroglycerin. Gee. Those aren't BLS interventions in the US (especially California), but they aren't considered ALS in Canada, but those are considered an important set of treatment interventions.
Does ALS make a difference in Ontario (Canada)? Well, it depends on the complaint. However, applying OPALS to the US would mean comparing paramedics to PAs trained in emergency medicine because Canada calls our paramedics "BLS" and our basics "first responders."
*Since I'm actually trying to make a consistant discussion, I'll actually provide a reference and link.
Stiell IG, Spaite DW, Field B, et al. Advanced Life Support for Out-of-Hospital Respiratory Distress.
N Engl J Med. 2007. 356;21
http://content.nejm.org/cgi/reprint/356/21/2156.pdf