No Difference in Sleep and RBD between Different Types of Patients with Multiple System Atrophy: A Pilot Video-Polysomnographical Study

Table 2

Polysomnographic characteristics of MSA-C and MSA-P patients.

	MSA-C (𝑛=11)	MSA-P (𝑛=26)	Significance 𝑃 value
Sleep efficiency, %	64.27 ± 12.04	60.64 ± 16.01	NS
Sleep latency, min	25.74 ± 17.33	29.76 ± 41.54	NS
Sleep stage 1, % of TST	23.47 ± 8.46	26.63 ± 9.84	NS
Sleep stage 2, % of TST	52.15 ± 8.67	47.55 ±14.61	NS
Sleep stage 3, % of TST	4.70 ± 6.70	8.58 ± 11.55	NS
Sleep REM, % of TST	19.68 ± 9.84	17.24 ± 11.08	NS
REM latency, min	123.09 ± 81.62	141.72 ± 103.93	NS
Awakenings, total	18.09 ± 9.27	23.69 ± 8.24	NS
Awakenings index/h	4.01 ± 1.96	5.83 ± 3.75	NS
PLM index	64 ± 55	61 ± 48	NS
PLMS index	72 ± 65	66 ± 63	NS
PLMW index	38 ± 33	48 ± 37	NS
RLS-like, 𝑛 (%)	3 (30.77)	8 (27.27)	NS

TST: total sleep time. Sleep efficiency was calculated as % of sleep during time in bed; sleep stages were calculated as % of TST; index of periodic leg movements (PLM) was calculated per hour of time in bed (PLM index), per hour of sleep (PLMS index), and per hour of wakefulness (PLMW index), awakening index = total number of awakenings in TST, RLS-like: restless legs symptoms, MSA-C: multiple system atrophy cerebellar predominant, MSA-P: multiple system atrophy parkinsonian predominant, NS: nonsignificant (𝑃 value > 0.05).