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Table 2 Prevalence of self-reported symptoms related to sleep-disturbances and sleep apnea among the respondents in the Osteogenesis imperfecta patient cohort and controls

From: Fatigue and disturbances of sleep in patients with osteogenesis imperfecta – a cross-sectional questionnaire study

  Number of patients with symptoms (%)
N = 56
Number of controls with symptoms (%)
N = 56
Significance of difference between the study groups (Chi-Square test)
Snoring 32/52 (62) 15/54 (28) 11.1 p = 0.001
Pauses of breathing during sleep 13/42 (31) 3/54 (6) 9.9 p = 0.002
Restless sleep 43/55 (78) 23/54 (43) 12.9 p < 0.001
Grinding of teeth during sleep 22/52 (42) 23/55 (42) Non-significant
Recurrent nightmares 16/50 (32) 2/55 (4) 13.3 p < 0.001
Daytime sleepiness 43/53 (81) 34/56 (61) 5.6 p = 0.018
Likelihood of dozing 14/52 (27) 5/56 (9) 6.3 p = 0.012
Dysphagia 17/51 (33) 1/55(2) 20.0 p < 0.001
Difficulties of concentration 24/50 (48) 6/54 (11) 16.6 p < 0.001
Nocturia 15/51 (29) 5/54 (9) 5.8 p = 0.016
Restless legs 19/51 (37) 8/54 (15) 10.0 p = 0.002
Diagnosed sleep apnea 8/54 (15) 1/55 (2) 5.4 p = 0.020