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International Journal of Bipolar Disorders

Table 3 Mean working memory (WM) capacity as estimated using Pashler’s K (SD)

From: Transdiagnostic comparison of visual working memory capacity in bipolar disorder and schizophrenia

 

WM Capacity mean (SD)

Group comparisons

Effect size (p-value)

  

HC

PBD

BP-I

BP-II

BP HPS + 

BP HPS-

PSZ

SZ

SZAFF

HC

3.39

(0.61)

–

0.202 (0.020)*

0.167

(0.082)

0.214 (0.038)*

0.216 (0.029)*

0.156

(0.120)

0.370 (< 0.001)*

0.340 (< 0.001)*

0.347 (< 0.001)*

PBD

3.15

(0.75)

0.202 (0.020)*

–

–

–

–

–

0.201 (0.024)*

–

–

BP-I

3.22

(0.62)

0.167

(0.082)

–

–

0.104

(0.414)

–

–

–

0.211

(0.061)

0.290 (0.025)*

BP-II

3.03

(0.92)

0.214 (0.038)*

–

0.104

(0.414)

–

–

–

–

0.105

(0.395)

0.180

(0.217)

BP HPS + 

3.19

(0.56)

0.216 (0.029)*

–

–

–

–

0.038

(0.767)

–

0.169

(0.148)

0.262

(0.052)

BP HPS-

3.10

(0.92)

0.156

(0.120)

–

–

–

0.038

(0.767)

 

–

0.171

(0.150)

0.233

(0.090)

PSZ

2.90

(0.77)

0.370 (< 0.001)*

0.201 (0.024)*

–

–

–

–

–

–

–

SZ

2.89

(0.81)

0.340 (< 0.001)*

–

0.211

(0.061)

0.105

(0.395)

0.169

(0.148)

0.171

(0.150)

–

–

-0.047

(0.705)

SZAFF

2.90

(0.70)

0.347 (< 0.001)*

–

0.290 (0.025)*

0.180

(0.217)

0.262

(0.052)

0.233

(0.090)

–

-0.047

(0.705)

–

  1. Results of Mann–Whitney U tests to test pairwise comparisons of working memory capacity estimated with Pashler’s K and reported as effect size (r = z / √N) and p-value. HC = healthy controls, PBD = patients with bipolar disorder, BP-I = patients with bipolar type I, BP-II = bipolar patients with bipolar type II, BP HPS +  = bipolar patients with history of psychotic symptoms, BP HPS- = bipolar patients without history of psychotic symptoms, PSZ = patients with schizophrenia, SZ = patients with schizophrenia, SZAFF = patients with schizoaffective disorder. Statistical significance is indicated by *
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