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Table 1 Regression analysis of the determinants of the sum score on the 15D.

From: Indoors illumination and seasonal changes in mood and behavior are associated with the health-related quality of life

Variable

Estimate

Standard error

t value

P value

Female sex

-0.00054

0.0019

-0.29

0.77

Aged 45 to 60

-0.014

0.0018

-7.68

<0.0001

Aged 61 to 75

-0.030

0.0069

-4.31

<0.0001

Aged 75 to 99

-0.12

0.078

-1.50

0.13

Medium education

0.0034

0.0027

1.24

0.21

High education

0.0036

0.0030

1.22

0.22

Living together

0.0025

0.0022

1.12

0.26

Location in the north

-0.0017

0.0028

-0.77

0.44

Medium exercise

0.0067

0.0026

2.54

0.011

Fitness exercise

0.011

0.0027

4.08

<0.0001

Sport exercise

0.0094

0.0051

1.84

0.066

Medium alcohol intake

0.0048

0.0023

2.14

0.033

High alcohol intake

0.0026

0.0026

1.010

0.31

No alcohol intake

-0.0023

0.0038

-0.59

0.56

High GSS

-0.021

0.0024

-8.70

<0.0001

High BDI

-0.068

0.0029

-23.63

<0.0001

Low illuminance levels

-0.011

0.0026

-4.10

<0.0001

Medium outdoor activities

-0.0030

0.0028

-1.06

0.29

High outdoor activities

0.0016

0.0029

0.55

0.58

Medium social activities

0.0013

0.0024

0.53

0.60

High social activities

0.0030

0.0025

1.17

0.24