Skip to main content

Table 5 Modifications in polysomnographic results between the groups “Depression”, “Insomnia” and “Normative”, adjusted for age and gender and the number of cycle when necessary

From: Similar polysomnographic pattern in primary insomnia and major depression with objective insomnia: a sign of common pathophysiology?

Normative (N = 30) Insomnia (N = 84) Depression (N = 95)

ba1(ES) Group “Insomnia” vs. “Normative”

ba2(ES) Group “Depression” vs. “Normative”

ba3(ES) Group “Insomnia” vs. “Depression”

P-value adjusted for age, sex and the number of cycle

REM (%)

 1st third

−4.71 (1.60)a

−4.46 (1.58)a

0.25 (1.11)

0.001

 2nd third

0.04 (2.86)

−0.71 (2.83)

−0.75 (1.98)

0.923

 3rd third

−5.57 (2.57)a

−6.27 (2.54)a

−0.70 (1.78)

0.046

Stage 1 (%)

 1st third

0.26 (1.08)

0.97 (1.07)

0.72 (0.75)

0.523

 2nd third

0.19 (1.18)

0.99 (1.17)

0.80 (0.82)

0.532

 3rd third

−1.00 (1.17)

−0.27 (1.15)

0.73 (0.81)

0.566

Stage 2 (%)

 1st third

−8.65 (4.00)a

−10.79 (3.96)a

−2.14 (2.77)

0.025

 2nd third

−10.41 (3.61)a

−8.06 (3.58)a

2.36 (2.50)

0.017

 3rd third

−7.51 (3.65)

−5.13 (3.61)

2.38 (2.53)

0.120

SWS (%)

 1st third

−11.65 (2.72)a

−11.48 (2.59)a

0.16 (1.88)

<0.001

 2nd third

−0.36 (2.26)

0.69 (2.24)

1.05 (1.57)

0.798

 3rd third

−0.27 (0.39)

−0.14 (0.38)

0.12 (0.27)

0.766

    

P-value adjusted for age and sex

WASO (%)

 1st third

22.16 (4.82)a

22.10 (4.81)a

−0.05 (3.40)

<0.001

 2nd third

5.14 (2.76)

2.90 (2.75)

- 2.24 (1.95)

0.157

 3rd third

15.69 (4.59)a

11.81 (4.58)a

- 3.93 (3.24)

0.003

    

a p < 0.05

  1. ba1 (ES)/ba2 (ES): quantile regression coefficient adjusted (standard error). These coefficients are the difference of median adjusted for age, gender and the number of cycle when necessary between “Insomnia”/"Depression” group and the “Normative”
  2. ba3 (ES): quantile regression coefficient adjusted (standard error). These coefficients are the difference of median adjusted for age, gender and the number of cycle when necessary between the “Insomnia” group and “depression” group
  3. SWS slow-wave sleep, REM Rapid eye movement sleep, WASO wake after sleep onset