U-shaped association between sleep duration and subjective cognitive complaints in Chinese elderly: a cross-sectional study

Lin, Li-Hua; Xu, Wen-Qi; Wang, Shi-Bin; Hu, Qing; Zhang, Ping; Huang, Jia-Hao; Ke, Yun-Fei; Ding, Kai-Rong; Hou, Cai-Lan; Jia, Fu-Jun

doi:10.1186/s12888-022-03738-0

Table 3 Association of SCD-Q9 score and independent variables measured by the multivariable generalized additive model

From: U-shaped association between sleep duration and subjective cognitive complaints in Chinese elderly: a cross-sectional study

Variables	Overall score of SCD-Q9				Overall memory function and time comparison score				Daily activity ability score
	Model1^a		Model2^b		Model1^a		Model2^b		Model1^a		Model2^b
	B	p	B	p	B	p	B	p	B	p	B	p
Age(> 70 years)	0.435	< 0.001	0.176	0.036	0.366	< 0.001	0.142	0.101	0.405	< 0.001	0.171	0.042
Gender (Female)	0.478	< 0.001	0.350	< 0.001	0.452	< 0.001	0.339	< 0.001	0.387	< 0.001	0.271	0.001
Residence (Nursing home)			0.297	0.002			0.113	0.259			0.450	< 0.001
Education (vs. Primary school or lower)
Junior high school			−0.261	0.011			−0.233	0.029			− 0.228	0.027
Senior high school			−0.324	0.002			−0.237	0.027			− 0.342	0.001
College or higher			−0.264	0.037			−0.196	0.135			−0.280	0.028
Married/ Cohabitant (yes)			0.030	0.719			−0.031	0.716			0.095	0.248
Monthly income (vs. Less than 3500)
3500–5999			0.057	0.541			0.200	0.036			−0.140	0.130
≥ 6000			0.118	0.383			0.345	0.014			−0.205	0.130
Current smokers (yes)			0.313	0.022			0.345	0.015			0.186	0.172
Alcohol consumption (yes)			−0.020	0.890			−0.084	0.578			0.063	0.667
Tea-drinking habits (yes)			0.113	0.140			0.165	0.037			0.019	0.804
Napping habits (yes)			0.185	0.035			0.228	0.012			0.083	0.345
Exercise frequency (vs. Hardly)
Frequently			−0.023	0.867			−0.082	0.559			0.056	0.677
Occasionally			−0.135	0.151			−0.077	0.428			−0.175	0.065
BMI (kg/m²) (vs. < 18.5)
18.5 to 24			−0.243	0.068			−0.248	0.071			−0.168	0.208
≥ 24			−0.240	0.080			−0.230	0.104			−0.186	0.176
Hypertension (yes)			0.0004	0.995			0.041	0.578			−0.049	0.494
Diabetes (yes)			0.087	0.303			0.080	0.361			0.073	0.391
Sleep duration (h/night)	Smooth Curve, EDF = 3.842	< 0.001	Smooth Curve, EDF = 3.575	0.004	Smooth Curve, EDF = 4.471	< 0.001	Smooth Curve, EDF = 4.478	0.010	Smooth Curve, EDF = 2.314	0.001	Smooth Curve, EDF = 2.080	0.010

SCD-Q9 9-items subjective cognitive decline questionnaire, BMI Body mass index
^aModel 1: Adjusted for age and gender
^bModel2: Adjusted for age and gender, residence, education, married/ cohabitant status, monthly income, current smoking status, alcohol consumption, tea-drinking, napping habits, exercise frequency, BMI, hypertension, diabetes

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ISSN: 1471-244X

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