Table 2

Correlation coefficients between the main variables

Global

Sleep

Quality

Sleep

Duration

(contin.)

Sleep

Latency

Sleeping

Medication

General

Perceived

Stress

Body

Mass

Index


Global Sleep Quality

******

-0.65*

<.0001§

0.70

<.0001

0.45

<.0001

0.36

<.0001

0.13

<.0001

Sleep Duration (continuous)

******

-0.27

<.0001

-0.09

0.0006

-0.16

<.0001

-0.12

<.0001

Sleep Latency

******

0.29

<.0001

0.26

<.0001

0.04

0.17

Use of Sleeping Medication

******

0.18

<.0001

0.08

0.004

General Perceived Stress

******

0.08

0.002


*Spearman correlation coefficient;

§P-value for statistical significance;

Considered continuously.

Bidulescu et al. BMC Public Health 2010 10:581   doi:10.1186/1471-2458-10-581

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