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Table 3 Association between daytime napping and five components of successful aging among the total population and stratified by the nighttime sleep duration groups

From: Daytime napping and successful aging among older adults in China: a cross-sectional study

 Low probability of disease
TOTAL
OR (95%CI)
Nighttime sleep duration (per night)
< 6 h
OR (95%CI)
6 to less than 8 h
OR (95%CI)
≥8 h
OR (95%CI)
Daytime napping (per day)
 0 min1111
 1–60 min0.776 (0.686–0.878)0.818 (0.666–1.004)0.740 (0.599–0.916)0.753 (0.598–0.949)
  > 60 min0.761 (0.651–0.889)0.770 (0.581–1.020)0.720 (0.548–0.947)0.759 (0.582–0.988)
 No disease-related disability
TOTAL
OR (95%CI)
Nighttime sleep duration (per night)
< 6 h
OR (95%CI)
6 to less than 8 h
OR (95%CI)
≥8 h
OR (95%CI)
Daytime napping (per day)
 0 min1111
 1–60 min0.848 (0.674–1.067)0.931 (0.675–1.285)0.746 (0.462–1.203)0.730 (0.448–1.188)
  > 60 min0.595 (0.455–0.777)0.859 (0.558–1.324)0.355 (0.213–0.591)0.581 (0.345–0.980)
 High cognitive functioning
TOTAL
OR (95%CI)
Nighttime sleep duration (per night)
< 6 h
OR (95%CI)
6 to less than 8 h
OR (95%CI)
≥8 h
OR (95%CI)
Daytime napping (per day)
 0 min1111
 1–60 min1.233 (1.063–1.430)1.608 (1.257–2.056)1.187 (0.918–1.535)0.925 (0.699–1.223)
  > 60 min1.062 (0.883–1.277)1.226 (0.880–1.707)0.875 (0.634–1.209)1.060 (0.774–1.452)
 High physical functioning
TOTAL
OR (95%CI)
Nighttime sleep duration (per night)
< 6 h
OR (95%CI)
6 to less than 8 h
OR (95%CI)
≥8 h
OR (95%CI)
Daytime napping (per day)
 0 min1111
 1–60 min0.927 (0.794–1.083)1.023 (0.808–1.295)0.783 (0.585–1.049)0.952 (0.704–1.287)
  > 60 min0.775 (0.640–0.937)0.870 (0.632–1.196)0.573 (0.405–0.811)0.881 (0.627–1.238)
 Active engagement with life
TOTAL
OR (95%CI)
Nighttime sleep duration (per night)
< 6 h
OR (95%CI)
6 to less than 8 h
OR (95%CI)
≥8 h
OR (95%CI)
Daytime napping (per day)
 0 min1111
 1–60 min1.183 (1.044–1.339)1.246 (1.014–1.530)1.091 (0.880–1.353)1.200 (0.949–1.519)
  > 60 min1.120 (0.958–1.310)1.223 (0.923–1.619)0.880 (0.667–1.159)1.300(0.993–1.700)
  1. aBold values indicate statistical significance
  2. bBMI was not adjusted in the “low probability of disease” since obesity was regarded as a risk factor that was included in the dependent variable