Sleeping Bag Ratings >>
Sleeping Bag Research Sources and Methodology
Our research findings are based on over 1,350 reviews / comments of actual sleeping bag owners collected from diverse sources.
Sources
Retailers' Websites
Online retailers such as Amazon, Overstock.com, Wal-Mart, REI and several others provide their customers with the ability to rate and review products that they purchased from them. We have generally found the reviews on these websites to be credible and helpful.
Product Review Websites
A small amount of our research data may come from product review websites, such as Epinions or Viewpoints. Generally, we regard these sources to be the least credible since virtually anyone can post a product review and are sometimes paid to do so. Consequently, we include into our data only those reviews that we regard as most credible.
Message / Discussion Boards
Some data was collected from message boards. In case if you don't know, message boards generally operate by someone posting a question and then others reply with answers. In this case, someone typically asks others what sleeping bag they recommend or don’t recommend. People then reply with their opinions often based on their own ownership experience.
Personal Interviews
On occasion, we include owner data from personal interviews that we conduct. While the number of these interviews is small, the amount and quality of owner information they provide is often excellent.
Large Sample Sizes + Diverse Sources = Accurate Findings
The sample size of at least 1,200 actual owner experiences is large enough in our opinion to provide accurate findings. We at Sleep Like The Dead are not expert statisticians, but we believe that our findings, especially for the satisfaction ratings, have a maximum margin of sampling error of ±4 percentage points. We believe this because no matter how much data (information from owner reviews / comments) we add to each brand, our findings do not extend beyond a range of a few percentage points.
Unbiased Findings
Our mission is to help people sleep better and this can only be achieved by presenting unbiased and truthful information.
As a result, we receive NO compensation of any kind from any company, organization or individual to affect in any way or degree the content of our website including our product / owner research.
We do run advertisements for various sleep-related products and services on our website through Google which automatically and independent of us selects which ads and advertisers to display. This advertising in no way affects our website content or research results.
In addition, our research findings can be independently verified by anyone with a computer and internet connection, given that they are willing to invest enough time and effort.