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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
Model1a Model2b Model1a Model2b Model1a Model2b
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
  1. SCD-Q9 9-items subjective cognitive decline questionnaire, BMI Body mass index
  2. aModel 1: Adjusted for age and gender
  3. 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