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. 2018 Apr;44:67–75. doi: 10.1016/j.sleep.2017.11.1131

Table 2.

Proportion of responses to each question among participants with insomnia symptoms. A: > 30 min to fall asleep or waking up in the middle of the night; B: Waking up too early and not being able to go back to sleep; C: Needing medication to sleep (at least once a week); D: Difficulty staying alert during daytime.

N Type of symptoms
Number of symptoms
A (%) B (%) C (%) D (%) 1 (%) 2 (%) 3 (%) 4 (%)
All 86,119 69.3 63.7 7.5 13.7 58.1 31.4 8.7 1.8
Gender
 Men 28,867 67.1 62.1 5.9 10.8 63.4 28.7 6.7 1.3
 Women 57,252 70.5 64.5 8.3 15.2 55.4 32.9 9.7 2.1

Adjusted for age, sex and region (where appropriate).