Happiness measure, code: O-QOL-cy-sq-v-5-a

Selfreport on single queastion:

Thinking back over the past 12 months, how would you rate the overall quality of your life?
5 excellent
4 very good
3 good
2 fair
1 poor
Focus, O-QOL Overall: QualityOfLife
Time frame, cy last year
Mode, sq 1 question
Scale type, v verbal scale Range = 5
Used in studies