For a long list of reasons, college freshmen are often subpar sleepers. A new study by Kathryn Orzech, a postdoctoral fellow in sleep research at Brown University, and student health officials at the University of Arizona illuminates some of the factors undermining sleep. The research published in the current issue of the Journal of American College Health also indicates that college students think their sleep is better than it is and that a campuswide media intervention costing less than $2,500 was able to help nearly 10% of students find ways to sleep better.
"Students report a lot of issues with sleep quality and disturbed sleep," said Orzech, who combined online surveys and more detailed in-person interviews to determine the state of student sleep at the large public university in Tucson. Roommates, dorm noise, fraternity activities, and academic stress make college a novel sleeping environment, she found. "It’s disruptive to their sleep."
Consistent with other studies, Orzech and co-authors David Salafsky and Lee Ann Hamilton found that students often scored poorly on the Pittsburgh Sleep Quality Index (PSQI), a standardized measure. In results from online surveys of thousands of Arizona students between fall 2005 and spring 2007, the team found that average scores were consistently higher than 5, the level that indicates poor sleep. In fall 2005, for example, male students scored 6.38 on average, while women scored 6.69.
A typical student bedtime was about 12:40 am, and students routinely took 20 to 30 minutes to fall asleep. Because they often woke up between 8 and 8:30 am, many students netted less than 7 hours of sleep a night.
Despite their objectively poor scores, seven out of 10 students surveyed described their sleep as "fairly good" or better. The disconnect, Orzech said, may arise from students making comparisons in an environment where poor sleep is common.
In 48 follow-up interviews, as well as the surveys, students acknowledged that poor sleep undermined their memory, concentration, class attendance, mood, and enthusiasm. The study data found a mild correlation between poor sleep and lower grades.
The team did not just ask about sleep, but also sought to help students. In spring 2006, Salafsky and Hamilton launched a campuswide media campaign consisting of posters, student newspaper advertisements, and a "Go to Bed SnoozeLetter" that each delivered information about the health effects of sleep and tips to sleep better.
One poster, for example, advised students to keep regular bedtime and waking hours, to exercise regularly, to avoid caffeine and nicotine in the evening, to keep up with schoolwork, and to minimize sleep disruptions, perhaps by wearing ear plugs and a sleep mask.
"It resonated with people because it’s really simple stuff to do," Orzech said.
Of 971 students who responded to questions about the campaign, 90 said it helped them sleep better. Their PSQI score dropped, and they went to bed earlier, fell asleep faster, and stayed asleep longer.