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Table 1 Comparison of demographic, lifestyle and academic characteristics between good and poor sleepers according to the Pittsburgh Sleep Quality Index scale (n = 95)

From: A cross-sectional survey on sleep quality, mental health, and academic performance among medical students in Saudi Arabia

  Sleep quality p value
Good sleepers (n = 35), % Poor sleepers (n = 60), %
Gender
 Male 82.9 71.7 0.219
 Female 17.1 28.3
Academic year
 PYP 14.3 23.3 0.465
 Preclinical years 60.0 48.3
 Clinical years 25.7 28.3
Dietary habits
 Unhealthy 51.4 65.0 0.193
 Healthy 48.6 35.0
Physical activity
 Inactive 22.9 48.3 0.014
 Active 77.1 51.7
Smoking
 No 85.7 90.0 0.529
 Yes 14.3 10.0
Screen time
 Up to 5 h 40.0 26.7 0.046
 Five to 10 h 51.4 43.3
 More than 10 h 8.6 30.0
Quran reading
 No 11.4 21.7 0.209
 Yes 88.6 78.3
Living condition
 Alone 8.6 16.7 0.528
 Roommate 71.4 63.3
 Family 20.0 20.0
Attendance
 Irregular 5.7 11.7 0.339
 Regular 94.3 88.3
Teamwork
 All the time 11.4 8.3 0.525
 Sometimes 85.7 83.3
 Not at all 2.9 8.3
GPA
 High achievers 37.1 58.3 0.046
 Low achievers 62.9 41.7