The Egyptian Journal of Bronchology

Table 4 Correlation between PLM index with study parameters among cases

From: Periodic limb movement index and severity of obstructive sleep apnea

Variables	PLM index
Variables	r	P-value
Age (years)	0.11	0.2
BMI (kg/m²)	− 0.19	0.01*
STOP-Bang score	0.10	0.2
Epworth score	− 0.02	0.8
Total time in bed	− 0.09	0.3
Total sleep time	− 0.05	0.5
Sleep efficiency	0.08	0.3
RDI	0.12	0.1
Apnea index	0.11	0.15
Hypopnea index	0.24	0.003*
Baseline O₂ saturation	0.11	0.2
Minimal SpO₂	0.10	0.2
Average SpO₂	0.12	0.2
Desaturation index	0.22	0.006*
Arrhythmia index	0.004	0.9
PLMs with arousal index	0.64	0.001*
Wake index	0.07	0.4
AHI	0.27	0.001*

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