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. 2021 Apr 7;26:32. doi: 10.1186/s40001-021-00503-z

Table 3.

Factor loadings based on principal component analysis with oblimin rotation for the eight items from the SBQ (n = 372)

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Do you snore loudly… 0.46
Do you often feel tired… 0.25
Has anyone observed… 0.40
Do you have or… 0.58
Is your age greater… 0.20
Gender male… 0.63
Is your BMI… 0.62
Does your neck… 0.99