Data
179,164 items of data are available, covering 179,164 participants.
Some values have special meanings defined by Data-Coding
2590.
Units of measurement are servings/day.
| Maximum | 30 |
| Decile 9 | 6 |
| Decile 8 | 6 |
| Decile 7 | 5 |
| Decile 6 | 4 |
| Median | 4 |
| Decile 4 | 3 |
| Decile 3 | 3 |
| Decile 2 | 2 |
| Decile 1 | 2 |
| Minimum | 0 |
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- There are 28 distinct values.
- Mean = 3.98587
- Std.dev = 2.06093
- 760 items above graph maximum of 10
- 463 items have value -3 (Prefer not to answer)
- 26009 items have value -2 (I rarely or never drink caffeine)
|
Notes
Sleep online question: "How many servings of caffeine do you typically have in one day? (one serving equals one small mug of tea or coffee, or one can of caffeinated soft drinks, e.g. cola or energy drink)"
Coding 2590 defines 2 special values:
- -3 represents "Prefer not to answer"
- -2 represents "I rarely or never drink caffeine"
