Table 1 Association between prior-night sleep and next-day symptoms among military personnel with sleep problems (N = 270 for diary and N = 256 for FitBit)

From: Prior-night sleep predicts next-day symptoms over ten days among military personnel with sleep problems

 

Alert

Clear-headed

Refreshed

Fatigued

Happy

Sad

Stressed

Relaxed

Sleep diary

 TST

0.069a

<0.001 t = 7.94

0.076a

<0.001 t = 8.95

0.132a

<0.001 t = 13.2

−0.136a

<0.001 t = −13.44

0.059a

<0.001 t = 7.35

−0.024b

<0.001 t = −3.82

−0.061a

<0.001 t = −7.64

0.078a

<0.001 t = 8.68

 SE

1.039a

<0.001 t = 8.8

1.107a

<0.001 t = 9.65

1.792a

<0.001 t = 13.26

−1.779a

<0.001 t = −12.94

0.824a

<0.001 t = 7.53

−0.417a

<0.001 t = −4.96

−0.722a

<0.001 t = −6.64

1.114a

<0.001 t = 9.16

 Qual

0.145a

<0.001 t = 18.73

0.148a

<0.001 t = 19.81

0.242a

<0.001 t = 29.19

−0.205a

<0.001 t = −23.17

0.109a

<0.001 t = 14.95

−0.041a

<0.001 t = −7.13

−0.076a

<0.001 t = −10.34

0.135a

<0.001 t = 16.73

Fitbit

 TST

0.03c

0.001 t = 3.29

0.032a

<0.001 t = 3.6

0.073a

<0.001 t = 6.86

−0.079a

<0.001 t = −7.36

0.028c

<0.001 t = 3.3

−0.004

0.548 t = −0.6

−0.03a

<0.001 t = −3.48

0.04a

<0.001 t = 4.21

 SE

1.053c

0.002 t = 3.15

1.239a

<0.001 t = 3.83

1.922a

<0.001 t = 4.92

−1.456a

<0.001 t = −3.69

0.694d

0.023 t = 2.27

−0.205

0.382 t = −0.87

−0.517

0.092 t = −1.69

0.853d

0.013 t = 2.49

  1. The degrees of freedom for sleep diary models is df = 2197, and for Fitbit models is df = 1956.
  2. In each cell, the first line presents the unstandardized slope estimates (b weights), and statistical significance from mixed model analyses. All models controlled for age and sex. Statistical significance is based on q values resulting from the BH-FDR method to correct for multiple comparisons. The second line presents (original, unadjusted p value, and t statistic).
  3. aq < 0.0001.
  4. bq < 0.001.
  5. cq < 0.01.
  6. dq < 0.05.