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Table 1 Participant demographics and illness characteristics

From: Cognitive functioning following stabilisation from first episode mania

Demographics variables FEM (n = 41) HC (n = 21) Statistics p value
Age, M (SD) 21.32 (2.26) 21.14 (2.54) t test 0.784
Sex, male, n (%) 32 (78) 11 (52.38) χ 2 c 0.074
Premorbid intelligencea
 Based on WTAR UK norms, M (SD) 94.9 (13.81) 101.70 (9.65) t test 0.054
Education level
 Less than 12 years, n (%) 16 (39) 2 (7) χ 2 0.032
 12 years, n (%) 7 (17) 3 (14)   
 More than 12 years, n (%) 18 (44) 16 (76)   
Diagnosis
 Bipolar I disorderb, n (%) 35 (85)    
 Substance-induced mood disorder, n (%) 4 (10)    
 Schizoaffective disorder- bipolar type, n (%) 2 (5)    
Symptom rating
 YMRS, total, M (SD) 2.51 (3.57)    
 MADRS, total, M (SD) 7.39 (8.95)    
 BPRS, total, M (SD) 33.24 (9.32)    
 BPRS, positive psychotic subscale, M (SD) 4.63 (1.64)    
 CGI-BP, mania severity, M (SD) 1.15 (.573)    
 CGI-BP, depression severity, M (SD) 2.05 (1.563)    
 CGI-BP, overall severity, M (SD) 2.02 (1.491)    
  1. FEM first episode mania, HC healthy controls, WTAR Wechsler Test of Adult Reading, YMRS Young Mania Rating Scale, MADRS Montgomery–Åsberg Depression Rating Scale, BPRS Brief Psychiatric Rating Scale, CGI-BP Clinical Global Impression scale for bipolar illness, t test independent samples t test, χ 2 Chi-square test
  2. aMissing data (FEM, n = 1; HC, n = 1)
  3. bDiagnosis of bipolar I disorder confirmed by treating clinician (n = 1)
  4. cContinuity correction