What is it really about a doula that creates these amazing stats? Stats are numbers that quantify. What makes those numbers possible is something that can't be quantified - one trusted, trained professional who provides continuous one on one support, who is beside the woman, unwavering and steadfast in tending to her comfort, her emotional and physical well being, whose care is not medical in nature. So, it's not, for example, about labor progress, cervical dilation, blood pressure measurements, but how is the woman feeling? Does she feel cared for? Does she feel safe?
What I bring are essential elements of care that the rest of the team aren't. And it's this exactly that we know makes such an enormous positive impact on how laboring women do and why there's less use of pain medications, with reductions in interventions and cesarean rates. It isn't a number though and it's something that can be hard to wholly describe. 
It IS my presence - ever mindful of how the woman is doing from moment to moment, encouraging and reassuring, calming and grounding. Bringing my years of knowledge/experience to this woman, here and now, understanding what her specific needs are. Ensuring that her partner is doing well also! Partners are freed up when I am present so they can be there fully, without worry or feeling powerless. This in turn adds to the woman's sense of well being, so she relaxes and focuses on birthing. 
There is something wonderful that happens when women are tended to in this manner, that makes all the difference for their experience. The more secure they feel, the better labor goes. Yet when labor and birth take a different path, where other choices need to be made, my care still proves invaluable. I'm focused on emotional and mental well being, not tracings on the monitor.  
Care providers have their role. Their attention is focused on the health of mom and baby, through the lens of clinical care. We do need that and the complementary care of the doula's non-medical support. 
My care has so many facets. It shows up in the littlest of details, in the simplest of actions, such as wiping a sweaty brow with a cool cloth. One may ask how do we get from that to 60% reduction in women requesting epidurals?  You'd need to ask the women.

"I wanted support during labor, which you can't always count on from your partner or the nurses, all the time. It's her experience... which partners don't have of being at births and of having had a baby. We'll always be grateful for your attention to us at our daughter's birth."  Shauna

The decision to hire a birth doula was absolutely paramount to my birth experience, though I couldn’t have known it when we first set out to make our birth plan. Like every expectant parent, my partner and I wanted the best for our first birth, our firstborn, and his first entry into the world. I expected everything to go smoothly. I wanted to hire a birth doula to ensure we had the best possible chance for a complication-free delivery.

Our amazing doula, Debra Woods, was magically perfect, smoothly fitting in to the dynamics of our unfolding birth-time. When labour began and she showed up at our house, I was so relieved to see her! She took good care of all of us and it felt easy and relaxed, spirited and soulful. My partner was comfortably guided and supported as he guided and supported me. Debra ushered me into ‘the zone’ and it was lovely! Her expertise was amazing, offering different positions, rebozo shifting, homeopathics and more! But it was really her very person that made me feel so relaxed. Things were going so well that we decided to stay home and have our baby in this sweet and loving atmosphere.

However, even with the best of chances, our careful planning, and every well-intentioned effort, our birth did not end up going ‘as planned’. I ended up needing to make a hospital transfer. But having our amazing doula with us meant we weren’t alone! Inevitably I required a C-Section, which absolutely wasn’t in the plan, but because we had Debra with us, I felt safe and my partner and I had an ally in the midst of everything. She never left our side, accompanying my partner as he suited up, telling him what to expect, and walking him into the surgical suite. She even made sure he had a coffee and a muffin. It was such a relief to me to have her there, knowing that we were somehow taken care of, even as our birth plan went out the window. I can’t stress this enough! I only wish I’d had the forethought to ask for more of her help post-partum. Even so, she helped me (mostly out of the goodness of her heart) for months as I struggled with breastfeeding. I now know that I wouldn’t be breastfeeding my sweet 8 month old boy if it hadn’t been for her.

Even though my birth story has a degree of trauma, I remember it fondly because of the support we received with our enchanting birth doula. I wouldn’t hesitate to have her by my side again. In fact, I’d consider it integral. Giving birth is quite a ride, and one with it’s own trajectory and momentum, sometimes requiring a total reworking of the plan. In cases like this, how dear it is to have the care of an experienced companion! And how grateful I am to have had ours!