leftshot
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- Joined
- Dec 23, 2015
- Messages
- 7,631
- Reaction score
- 4,259
I'm not a current user of The Grint. So, I'm hoping those of you who are can confirm or correct some of my assumptions about that service.Many have indicated skepticism in the veracity of the study, or simply wanting to understand who was in the dataset and how the study was conducted. I found the original publication of the study here: https://mygolfspy.com/study-overall-golfer-performance-by-age/ and will be providing my thoughts later today. You are welcome to do the same.
- My Golf Spy describes The Grint as a "golf handicap and stat tracking service". That has always been my understanding too. So I have no idea why they would not use handicapping stats and data, which as many others have noted would yield a much more accurate comparison of golf ability to age than raw average score.
- The Grint is available worldwide, uses the World Handicap System and provides a USGA-compliant handicap. However, I could not anywhere find how many golfers keep their handicap on The Grint, nor how many of those people provide hole-by-hole scores to add to the database of detailed stats. Without these stats it is impossible to know the size of the dataset--much less how representative it is of the universe of golfers.
- According to Links Magazine "Just under 10 percent of golfers have an official handicap—or slightly more than 2.4 million of the 24.8 million Americans who played at least once on a golf course in 2020." Golf Magazine says that GHIN "has more than 2 million registered golfers". Thus The Grint membership must be <400,000. Probably significantly less given the number of other USGA and WHS compliant services out there. In addition, NGF puts the number of golf participants worldwide at 36.9 million.
- The study was based on a rather specialized and small subset of golfers. Specifically, ONLY those who keep a handicap and do so on The Grint, which represent 1% or less of golfers worldwide.
- Because of this the study is NOT representative of all golfers in the U.S.--much less the world.
- The methodology used is both flawed and unexplained introducing a lot of variables that influence the results and could have been eliminated or normalized.