Happiness measure, code: O-QLS-c-sq-v-5-c

Selfreport on single question:

Taking all things together, how would you say circumstances are these days? Would you say that you are:
1 very unhappy
2 not very happy
3 fairly happy
4 very happy
Focus, O-QLS Overal: Quality of Life Situation
Time frame, c currently (today, these days, presently)
Mode, sq 1 question
Scale type, v verbal scale Range = 5
Used in studies