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Table 3 Pairwise comparison for mean HADS-D scores among pattern of symptoms with sex and age as covariates

From: Epidemiological differences in levels of depressive signs among nocturnal symptoms of insomnia; results from the HUNT study

Pairwise comparisons

Difference in HADS-D mean

95% CI

p-value *

Onset

Maintenance

0.7

[0.2 to 1.1]

0.001

Terminal

0.2

[−0.4 to 0.8]

1.000

Onset + Maintenance

−0.6

[− 1.3 to 0.0]

0.108

Maintenance + Terminal

−0.1

[− 0.8 to 0.5]

1.000

Onset + Terminal

− 1.7

[−3 to − 0.5]

0.001

Onset + Maintenance + Terminal

− 1.3

[− 1.9 to − 0.7]

< 0.001

Maintenance

Terminal

− 0.5

[− 1.0 to 0.0]

0.100

Onset + Maintenance

− 1.3

[− 1.9 to − 0.7]

< 0.001

Maintenance + Terminal

− 0.8

[− 1.3 to − 0.3]

< 0.001

Onset + Terminal

−2.4

[− 3.6 to − 1.1]

< 0.001

Onset + Maintenance + Terminal

− 1.9

[− 2.5 to − 1.4]

< 0.001

Terminal

Onset + Maintenance

− 0.8

[− 1.5 to − 0.9]

0.015

Maintenance + Terminal

− 0.3

[− 0.9 to 0.3]

1.000

Onset + Terminal

− 1.9

[− 3.2 to − 0.6]

< 0.001

Onset + Maintenance + Terminal

− 1.4

[− 2.1 to − 0.8]

< 0.001

Onset + Maintenance

Maintenance + Terminal

0.5

[− 0.2 to 1.2]

0.731

Onset + Terminal

− 1.1

[− 2.4 to 0.2]

0.191

Onset + Maintenance + Terminal

− 0.6

[− 1.4 to 0.1]

0.112

Maintenance + Terminal

Onset + Terminal

− 1.6

[− 2.9 to − 0.3]

0.003

Onset + Maintenance + Terminal

− 1.1

[− 1.8 to − 0.5]

< 0.001

Onset + Terminal

Onset + Maintenance + Terminal

0.5

[− 0.8 to 1.8]

1.000

  1. *Bonferroni corrected for 21 comparisons
  2. N.B.: Differences in mean values can be considered as effect measure for the pairwise comparison (Baguley, 2009)