Table 3

Intergroup comparison of characteristics and sleep parameters of participants

GroupInsomnia group
(n=16)
Comorbid SAHS group (n=10)Z/ Embedded Image 2
Value
P value
Age41.68 (10.33)42.30 (7.95)0.1060.916
Sex (male/female, case)6/108/24.4730.034*
BMI22.77 (2.61)24.42 (3.09)1.4760.140
ISI5.87 (4.28)10.60 (5.16)2.1150.034*
SRQ2.87 (3.07)6.30 (3.12)2.4150.016*
TST (min)432.31 (59.34)457.60 (45.85)1.0810.280
SE (%)85.77 (4.48)87.33 (5.69)0.6590.510
LS (%)46.33 (9.17)47.11 (6.31)0.2110.833
DS (%)21.50 (5.81)19.90 (6.70)1.1070.268
 REM (%)17.94 (2.45)21.19 (5.50)1.4500.147
ODI3.58 (2.87)36.29 (10.25)4.217p<0.001*
Frequency of oxygen desaturation27.37 (17.21)278.40 (90.76)4.219p<0.001*
TS90%0.51 (1.63)11.17 (14.42)3.393p<0.001*
MSpO2 97.28 (1.59)94.43 (2.04)3.3740.001*
Pulse rate, P59.87 (7.31)65.40 (5.42)2.2180.027*
  • *p<0.05

  • BMI, body mass index; DS, deep sleep stage; ISI, Insomnia Severity Index; LS, light sleep stage; MSpO2, mean percutaneous oxygen saturation; ODI, oxygen desaturation index; SE, sleep efficiency; SRQ, self-reporting questionnaire; TS90%, percentage of time spent at SpO2 below 90%; TST, total sleep time.