The SF-36 has eight scales that measure physical and mental functioning. It is not specific to neck or back pain patients. But it can be used with a wide variety of patients.
The ODI measures pain intensity; level of personal care; and travel, social, and sexual activity. It is specifically for low back pain patients but has been used by some health care professionals with neck pain patients as well.
Recently, a group of physical therapists from Canada investigated the use of a shorter version of the SF-36 with neck and back pain patients. They used the 12-item Short-Form Survey (SF-12). The SF-12 is a one-page, series of 12 total questions. It is easy to complete and doesn't overburden the patient with paperwork.
It takes about two minutes (instead of 10 minutes with the SF-36) to complete. Best of all, it can be used with patients who have spinal disorders affecting both the neck and the low back.