During the past 30 days, for about how many days did you find yourself
unintentionally falling asleep during the day?

Response Unweighted Frequency Weighted Percentage Standard Error 95% Confidence Limit
Lower Upper
None 3645 66.1 0.8 64.5 67.8
One day 243 4.3 0.4 3.6 5.0
Two days 464 8.2 0.5 7.2 9.1
Three days 235 4.2 0.4 3.5 4.9
Four days 105 1.8 0.2 1.3 2.2
Five days 180 3.2 0.3 2.6 3.8
Six to Eight days 135 2.2 0.3 1.6 2.7
Nine to Eleven days 124 2.0 0.2 1.5 2.5
Twelve to Fourteen days 27 0.6 0.1 0.3 0.9
Fifteen or more days 483 7.5 0.4 6.6 8.3

Among all respondents, excluding unknowns and refusals.
On Questionnaire Split B