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Table 4 Quadratic correlations of demographics and clinical variables to patient anterior insula GMV

From: Correlating anterior insula gray matter volume changes in young people with clinical and neurocognitive outcomes: an MRI study

Demographic/clinical variable

Left anterior insula

Right anterior insula

Predicted IQ

r(117) = .03

r(117) = .04

Age of onset of illness

r(124) = .07

r(124) = .09

Years of Education

r(125) = .16

r(125) = .13

Antidepressant dose (mg/day)

r(64) = .13

r(64) = .06

Antipsychotic dose (mg/day)

r(60) = .20

r(60) = .26

Mood stabiliser dose (mg/day)

r(25) = .25

r(25) = .17

Social and occupational functioning (SOFAS)

r(119) = .12

r(119) = .13

Psychological distress (K-10)

r(125) = .12

r(125) = .10

Depression (HDRS)

r(121) = .17

r(121) = .19

Depression (DASS Depression subscore)

r(116) = .13

r(116) = .02

Anxiety (DASS Anxiety subscore)

r(116) = .14

r(116) = .13

Stress (DASS Stress subscore)

r(116) = .19

r(116) = .09

Social interaction anxiety (SIAS)

r(122) = .20

r(122) = .28**

Symptom severity (BPRS Total)

r(117) = .17

r(117) = .29**

Positive symptoms (BPRS Positive Symptoms subscore)

r(117) = .17

r(117) = .32**

Negative symptoms (BPRS Negative Symptoms subscore)

r(117) = .10

r(117) = .06

Depression (BPRS Depression subscore)

r(117) = .07

r(117) = .10

Mania (BPRS Mania subscore)

r(116) = .16

r(116) = .22

  1. Curve estimation regression explored the quadratic correlations between the left or right anterior insula GMV (corrected for ICV) with patient demographic and clinical variables (n = 133). ** p < .01 (2-tailed).