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Table 2 Estimates of the extent to which subjects in groups G2 and G3 carried out the intervention

From: A tryptophan-rich breakfast and exposure to light with low color temperature at night improve sleep and salivary melatonin level in Japanese students

Question: On a scale of 0 to 100, how would you estimate your confidence in your response? The question is “To what extent did you carry out this intervention program during this one month intervention period?

1. Estimate for the whole protocol. (G2, G3)

score /100

2. Estimate for “taking protein-rich and Vitamin B6-rich foods at breakfast”. (G2, G3)

score /100

3. Estimate for “exposure to sunlight after the breakfast”. (G2, G3)

score /100

4. Estimate for “exposure to low color temperature light emitted from incandescent bulbs at night". (G3)

score /100