Simmons said on Mar. 12 that this year's Korea Sleep Integration Quotient (KSIQ) was assessed at 66.25 points out of 100.
Simmons, together with the Korean Society of Sleep Medicine, released the index on the 13th, a day before World Sleep Day. The index was calculated by identifying sleep patterns, satisfaction, and hindering factors among 1,000 people nationwide ages 19 to 69.
It was calculated by adding the "sleep score," which evaluates the amount and quality of sleep, and the "sleep environment score," which reflects lifestyle habits and sleep environment factors.
In this survey, 72.1% of respondents said they experience discomfort from deteriorating sleep quality at least once a week. The representative types of discomfort were decreased concentration during work or study (52.4%), physical discomfort such as headaches or skin trouble (46.5%), emotional changes such as mood swings or irritability (41.5%), and decreased memory or judgment (33.1%), it was found.
Those who said their sleep quality had worsened compared with before reached 32.5%. In particular, the proportion was higher among women (37.2%) than among men (28.0%). By age group, people in their 20s (36.3%) were the most, followed by those in their 40s (34.1%).
In the question about sleep time, 69.2% of respondents said they do not reach the minimum recommended sleep time for adults of seven hours. Those who make up for insufficient sleep with naps came to 61.8%, and those who make up for it by sleeping in on weekends also came to 67.9%, showing a tendency to rely on "supplementary sleep" rather than regular sleep.
In addition, among married respondents, 38.1% said they "sleep alone."
A Simmons official said, "The majority of people are in a situation where chronic fatigue has accumulated, and they are experiencing discomfort in daily life due to low sleep satisfaction," adding, "We expect the integrated index to become a standard that drives the spread of a healthy sleep culture and qualitative growth across the industry."
Earlier on Mar. 11, Simmons Bed signed a memorandum of understanding (MOU) with the Korean Society of Sleep Medicine and announced the 2026 Korea Sleep Health Report, signaling full-fledged collaboration to create a healthy sleep environment for the public.