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Table 2 Frequency distribution of sleep quality scales in participants

From: Prevalence of sleep disturbances and its relationship with mobile phone overuse among an Iranian sample of students: a necessity for attention

Ā 

Normal

Mild problem

Moderate problem

Severe problem

Subjective sleep quality

18 (4.4)

86 (21.2)

240 (59.1)

62 (15.3)

Delayed sleep onset

79 (19.5)

190 (46.80)

100 (24.6)

37 (9.1)

Sleep duration

208 (51.2)

123 (30.3)

56 (13.8)

19 (4.7)

Sleep efficacy

4 (1.0)

7 (1.7)

ā€“-

395 (97.3)

Sleep disorders

31 (7.6)

320 (78.8)

55 (13.5)

ā€“-

Use of sleep-inducing medications

330 (81.3)

56 (13.8)

12 (3.0)

8 (2.0)

Daily dysfunction

65 (16)

163 (40.1)

144 (35.47)

34 (8.4)