Abolish 10-Point Rating Scales

People are frequently asked to rate something on a scale of 1 to 10. Let’s take the pain Numeric Rating Scale (NRS-11) as an example. 1 means low pain (bump), 10 means extreme pain (migraine). Now what would warrant a 2 or a 9? A person simply can’t categorize pain into 10 different levels. The  NRS-11 groups the 10 pain levels into 3 categories (Mild, Moderate, Severe). Why not just use a 3-point scale or the category names?

I postulate that most 10-point scales can be replaced with 5-point scales with no loss of information. For analysis purposes, most responses are going to be grouped into 3 – 5 categories or averaged.

Conversion of existing 10-point data values to 5-point data values is easy.

  1. Add 1 to the 10-point value
  2. Divide the result by 2
  3. Drop the fractional part

Example for value 9:

  1. 9 + 1 = 10
  2. 10 / 2 = 5

Example for value 10:

  1. 10 + 1 = 11
  2. 11 / 2 = 5.5
  3. Drop the .5 = 5

28 thoughts on “Abolish 10-Point Rating Scales”

  1. Thank you, I have recently been looking for information approximately this subject for a long time and yours is the greatest I have came upon till now. But, what in regards to the conclusion? Are you positive about the source?

  2. I like the valuable info you supply on your articles. I’ll bookmark your blog and test again here frequently. I am rather certain I’ll be informed a lot of new stuff proper here! Best of luck for the following!

  3. It’s a shame you don’t have a donate button! I’d certainly donate to this superb blog! I suppose for now i’ll settle for bookmarking and adding your RSS feed to my Google account. I look forward to brand new updates and will share this site with my Facebook group. Talk soon!

  4. I’m impressed, I have to say. Actually hardly ever do I encounter a weblog that’s both educative and entertaining, and let me inform you, you could have hit the nail on the head. Your concept is excellent; the problem is one thing that not enough persons are speaking intelligently about. I’m very blissful that I stumbled across this in my seek for one thing referring to this.

  5. Thanks for another wonderful article. Where else could anyone get that type of information in such an ideal way of writing? I have a presentation next week, and I’m on the look for such info.

  6. Thanks for sharing superb informations. Your website is so cool. I am impressed by the details that you have on this site. It reveals how nicely you understand this subject. Bookmarked this web page, will come back for extra articles. You, my pal, ROCK! I found simply the information I already searched all over the place and just couldn’t come across. What an ideal web-site.

  7. I like this web site very much, Its a very nice position to read and incur information. “It is impossible for a man to learn what he thinks he already knows.” by Epictetus.

  8. Thank you for sharing excellent informations. Your web-site is very cool. I’m impressed by the details that you have on this web site. It reveals how nicely you perceive this subject. Bookmarked this website page, will come back for extra articles. You, my pal, ROCK! I found just the info I already searched everywhere and just could not come across. What an ideal web site.

  9. I’ll immediately snatch your rss as I can not to find your e-mail subscription hyperlink or newsletter service. Do you’ve any? Please let me recognize so that I may just subscribe. Thanks.

  10. Hello just wanted to give you a quick heads up. The text in your article seem to be running off the screen in Ie. I’m not sure if this is a format issue or something to do with internet browser compatibility but I figured I’d post to let you know. The style and design look great though! Hope you get the issue fixed soon. Many thanks

  11. Woah! I’m really digging the template/theme of this site. It’s simple, yet effective. A lot of times it’s difficult to get that “perfect balance” between superb usability and visual appeal. I must say you have done a very good job with this. Also, the blog loads extremely quick for me on Opera. Exceptional Blog!

  12. My spouse and i were quite excited when Ervin managed to do his investigations with the precious recommendations he grabbed through the blog. It’s not at all simplistic to simply be freely giving guides which usually people may have been selling. And we already know we have got the website owner to thank because of that. These illustrations you have made, the simple blog navigation, the relationships you will aid to instill – it’s got mostly fantastic, and it’s really helping our son in addition to our family reason why the topic is excellent, and that is exceptionally vital. Many thanks for all!

  13. Just wish to say your article is as astounding. The clearness for your put up is just excellent and i can think you’re knowledgeable on this subject. Well along with your permission let me to snatch your feed to stay up to date with coming near near post. Thank you one million and please continue the enjoyable work.

  14. Good day! I know this is kinda off topic however , I’d figured I’d ask. Would you be interested in trading links or maybe guest authoring a blog article or vice-versa? My site goes over a lot of the same topics as yours and I think we could greatly benefit from each other. If you are interested feel free to send me an e-mail. I look forward to hearing from you! Awesome blog by the way!

Leave a Reply

Your email address will not be published. Required fields are marked *