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Table 4 Results of Logistic Regression for variables affecting mental health outcome scores at 1 and 3 months of ICU discharge

From: Post traumatic stress symptoms, anxiety, and depression in patients after intensive care unit discharge – a longitudinal cohort study from a LMIC tertiary care centre

Variable

B

SE

Wald

df

Sig.

Odds Ratio

95% CI for OR UPPER

LOWER

Logistic Regression for HADS scores at 1 month of ICU discharge

 Married

−1.01

0.43

4.42

1

0.04

0.36

0.14

0.93

 Substance abuse

1.52

0.41

13.5

1

< 0.005

4.57

2.03

10.28

 Social Support

−0.76

0.37

3.59

1

0.04

0.5

0.22

0.9

 QOL score at 1 month

−4.21

1.09

14.5

1

< 0.005

0.015

0.002

0.131

Logistic Regression for HADS scores at 3 months of ICU discharge

 Substance abuse

0.93

0.41

5.3

1

0.02

2.5

1.15

5.68

 Comorbidity score

0.67

0.26

6.5

1

0.01

1.9

1.17

3.3

 Social Support

- 0.8

0.4

4.01

1

0.04

0.45

0.2

0.9

Logistic Regression for IES-r scores at 1 month of ICU discharge

 Substance Abuse

0.64

0.27

5.79

1

0.02

1.92

1.13

3.27

 APACHE II score

0.06

0.03

4.17

1

0.04

1.06

1.002

1.12

 QOL score at 1 month

−3.16

0.02

11.85

1

0.001

0.04

0.007

0.25

Logistic Regression for IES-r scores at 3 months of ICU discharge

 Substance abuse

0.73

0.28

6.59

1

0.01

2.08

1.19

3.65

 Social Support

−0.86

0.37

5.49

1

0.02

0.42

0.2

0.86

  1. Social Support – Based on scores on the MSPS scale, lower scores indicate less social support. QOL: Quality of Life based on EQ5D- EQ5D 3 L index scores where lower scores indicate worse QOL; Comorbidity score is the Chalrson comorbidity index, with higher scores indicating more significant comorbidity. APACHE II- Acute Physiology and Chronic Health Evaluation scores where lower scores indicate greater severity of illness in the first 24 h of ICU admission; HADS – Hospital Anxiety Depression scale; IES-r – Impact of events scale revised- indicative of symptoms of posttraumatic stress