Majority of Japanese have worn a mask in bed

ValuePress! recently reported on wearing masks while sleeping. I don’t bother; I’ve done so once or twice, but my problem is drool rather than dryness, so masks don’t last very long.

Note we’re talking about mouth and nose masks, not eye masks, as you can see on these waking people in Tokyo:

Research results

Q1: What symptoms do you feel when you wake up? (Sample size=965, multiple answer)

Dry mouth, throat (to SQ1)	43.6%
Dry lips (to SQ1)	28.4%
Bad breath (to SQ1)	22.3%
Dry skin (to SQ1)	21.0%
None of the above (to SQ2)	21.9%

Q1SQ1: Do you wear a mask when sleeping? (Sample size=754)

Usually (to SQ3)	11.1%
Sometimes (to SQ3)	54.8%
Never (to SQ4)	34.1%

Q1SQ2: Do you wear a mask when sleeping? (Sample size=211)

Usually (to SQ3)	11.4%
Sometimes (to SQ3)	26.1%
Never (to SQ4)	62.5%

Combining the above two questions:

Q1SQ1+SQ2: Do you wear a mask when sleeping? (Sample size=965)

Usually (to SQ3)	11.2%
Sometimes (to SQ3)	48.5%
Never (to SQ4)	40.3%

Q1SQ3: Why do you wear a mask when sleeping? (Sample size=577, multiple answer)

To prevent dry mouth, throat	53.6%
To prevent illnesses like cold, flu	30.5%
To prevent dry lips	19.4%
To prevent dry skin	19.2%
To block pollen	12.0%
To block house dust	10.1%
Other	5.0%
No particular reason	2.9%

Q1SQ4: Why don’t you wear a mask when sleeping? (Sample size=577, multiple answer)

Feels difficult to breath	59.7%
Hurts my ears	15.7%
Falls off while sleeping	11.4%
Other	15.7%

Demographics

Between the 14th and 18th of February 2018 965 members of the VoiceNote monitor group completed a private internet-based questionnaire. No further demographics were provided.