Table 3 Descriptive univariate analysis and machine-learning estimators of high relapse risk after the first episode of psychosis (HRR-FEP).

From: Combining MRI and clinical data to detect high relapse risk after the first episode of psychosis

 

Descriptive univariate analysis

Machine learning

Clinical variables

 Schizoaffective disorder

HR = 3.6, P = 0.046

β = +0.24

 ↓ Poor rapport (PANSS N3)

β = −0.01

 ↓ Difficulty in abstract thinking (PANSS N5)

HR = 0.6, P = 0.044

β = −0.074

 ↓ Conceptual disorganization (PANSS P2)

β = −0.01

 ↓ Poor attention (PANSS G11)

β = −0.04

 ↑ Age in years

HR = 1.1, P = 0.008

 ↑ Long-acting injectable antipsychotic

β = 0.01

Gray matter increase

 ↑ R Postcentral

Unm, [54, −6, 24], β = +0.93

Gray matter decrease

 ↓ R middle temporal

Unm, [66, −6, −12], β = −0.43

 ↓ R inferior frontal/precentral

Unm, [30, 6, 36], β = −0.21

Mod, [42, 6, 36], β = −0.18

 ↓ R middle frontal

Unm, [30, 42, 36], β = −0.20

 ↓ R/L rectus

Unm, [−6, 30, −36], z = −2.6

Mod, [6, 30, −24], β = −0.17

Unm, [6, 30, −24], β = −0.15

 ↓ L superior frontal

Unm, [−18, 66, −24], z = −2.8

 ↓ R medial frontal

Unm, [6, 78, −12], z = −2.6

 ↓ R Angular

Unm, [30, −54, 36], β = −0.05

White matter increase

 ↑ R precentral

Unm, [42, 6, 36], β = +0.54

 ↑ L Middle frontal

Unm, [−42, 6, 36], β = +0.10

White matter decrease

 ↓ R middle frontal

Unm, [30, 30, 36], β = -0.86

 ↓ L inferior frontal

Mod, [−42, 18, 12], β = −0.73

Unm, [−42, 18, 12], β = −0.57

 ↓ R Cuneus

Mod, [18, −90, 12], β = −0.18

 ↓ R superior frontal

Unm, [6, 54, 24], z = 2.9

 ↓ L corpus callosum

Unm, [−18, 18, 24], z = 2.7

Unm, [−18, −30, 24], β = −0.05

 ↓ R corpus callosum

Mod, [6, 30, 0], β = −0.05

 ↓ L Middle frontal

Mod, [−30, 42, 12], β = −0.06

 ↓ R postcentral

Mod, [54, −6, 24], β = −0.09

  1. L left, Mod modulate, PANSS Positive and Negative Syndrome Scale, R right, Unm unmodulated.
  2. In the descriptive univariate analysis, we only report the peaks of MRI clusters with voxel uncorrected P value <0.005 and the clinical variables with uncorrected P value <0.05. For the sake of simplicity, we only report here the machine-learning coefficients with an absolute value ≥0.01 for clinical variables and ≥0.05 for MRI voxels; see the entire model in the Supplement.