I would like to collect together some data to help me analyse the reality of the Chalder scale in ME/CFS. You may have seen the blog at meanalysis.blogspot.com : now we are taking the work much further. In theory it is possible for someone who is mildly affected but in many areas to achieve a worse score than someone who is severely affected in just a few areas: I need to see if this happens in reality. Would you be willing to send me your own assessment? I would like you to tell me whether you are mild, moderate or severe, then give me the 11 scores for each of the Chalder questions as you are today. Then think back over the year and give me the scores again for any bad patch that you went through that lasted more than a week, and again for any good patch lasting more than a week. I have put my scores at the bottom of this as an example of how I would like you to set it out. I'd prefer it if you sent it directly to me (email@example.com) if that suits you, rather than through a private message - that may fill up too quickly (he says optimistically). I will contact you when the analysis is finished, but don't hold your breath - it is complex, and my brainpower is erratic. Thank you in advance for your help. Mild is defined as being able to lead a reasonably normal life, moderate is defined as not being able to work, and being able to do less than 50% of what you could do before you became ill. Severe is defined as being able to do less than 25% of what you could do before you became ill, and being dependent on other people for activities such as cooking and shopping. Chalder Fatigue Scale - contains 11 questions Do you have problems with tiredness? Do you need to rest more? Do you feel sleepy or drowsy? Do you lack energy? Do you have trouble starting things? Do your muscles have less strength? Do you feel weak? Do you have difficulty concentrating Do you find it more difficult to find the correct word? Do you make slips of the tongue when speaking? How is your memory? and asks if the factor is less than usual in strength (0 pts)/ no more than usual (1 pt)/ more than usual (2 pts) / much more than usual (3 pts), where "usual" refers back to how you felt when you were healthy: if you can't remember that far back, compare yourself with healthy associates. It isn't easy to complete: don't worry if you find some parts too vague. My Score: Graham - moderate - today 2,2,2,3,1,1,1,2,2,2,3 bad 3,3,3,3,2,1,1,2,3,2,3 good 2,2,2,3,1,1,1,2,2,2,3 (yes, I'm on a good patch at the moment).