Table 1

Demography and cognitive scores of the subjects in the ageing Han Chinese population

Napping (n=1534)Non-napping (n=680)F or χ2P value
Age (years)71.09 (7.62)70.40 (8.22)3.630.057
Male/female638/896274/4060.330.567
Education (years)7.37 (4.72)6.95 (4.71)3.810.051
Night sleep (hours)6.54 (1.49)6.61 (1.51)1.130.289
Smoking (Y/N)426/1108185/4950.080.784
Drinking (Y/N)331/1203138/5420.470.495
Hypertension (Y/N)742/792313/3575.310.070
Diabetes (Y/N)266/1268106/5741.040.309
Dementia (Y/N)80/116947/4982.840.092
MMSE
Orientation9.28 (1.51)9.01 (1.83)12.83<0.001*
Language function7.27 (1.92)7.06 (2.01)5.260.022*
MMSE total25.30 (5.09)24.56 (5.85)8.850.003*
MoCA
Orientation5.55 (1.02)5.41 (1.21)7.630.006*
NTB
Digit span13.24 (6.62)12.48 (5.62)6.800.009*
Language fluency24.35 (9.94)23.23 (11.59)5.400.020*
  • Data is shown as mean(SD) unless otherwise stated.

  • *p<0.05.

  • MMSE, Mini-Mental State Examination; MoCA, Montreal Cognitive Assessment; NTB, Neuropsychological Test Battery.