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Table 1 Comparison of patients diagnosed with schizophrenia and bipolar disorder on social-demographic characteristics, ITAQ, DAI, SF-36 scores with t-tests or chi-square test

From: Comparison of burden among family members of patients diagnosed with schizophrenia and bipolar disorder in a large acute psychiatric hospital in China

Variables SP (N=243) BD (N=200) Statistics p
Mean/N S.D./% Mean/N S.D./%
Patient’s characteristics
 Age(years) 35.5 12.2 31.3 12.3 t=3.575 <0.001***
 Onset age 26.5 9.8 25.9 9.7 t=0.661 0.509
 Duration of illness(year) 8.5 8.9 8.1 8.5 t=0.522 0.602
 Education (years) 11.3 3.0 11.4 3.5 t=−0.601 0.548
 Gender (male) 136 56.0% 98 49.0% x 2=2.137 0.086
 Employed 59 24.3% 55 27.5% x 2=0.595 0.440
 Positive family history 67 27.6% 60 30.0% x 2=0.316 0.574
 Number of previous admissions   x 2=2.025 0.567    
  0 77 31.7% 62 30.1%   
  1 57 23.6% 49 24.5%   
  2 36 14.8% 38 19.0%   
  ≥3 73 30.0% 51 25.5%   
 Marital status   x 2=1.855 0.396    
  Unmarried 131 53.9% 116 58.0%   
  Married 91 37.4% 73 36.5%   
  Divorce/widow 21 8.6% 11 5.5%   
With insurance 106 43.6% 68 34.0% x 2=4.258 0.039*
Patient’s clinical features
 PANSS positive 24.1 6.4 -- --   
 PANSS negative 24.0 7.7 -- --   
 PANSS general 45.5 8.2 -- --   
 PANSS total 93.5 15.1 -- --   
 HAMD total -- -- 21.6 11.2   
 YMRS total -- -- 31.6 11.7   
 ITAQ total 5.6 5.2 6.5 5.9 t=−1.813 0.070
 DAI total 1.2 5.3 1.3 5.2 t=−0.160 0.873
 SF-36 PCS 47.8 31.8 53.7 33.3 t=−1.707 0.089
 SF-36 MCS 48.3 30.5 48.8 30.3 t=−0.135 0.892
  1. Abbreviations: SP Schizophrenia, BD Bipolar Disorder, PANSS Positive and Negative Syndrome Scale, HAMD Hamilton Depression Rating Scale, YMRS Young Mania Rating Scale, SF-36 PCS Short Form 36 Health Questionnaire Physical Component Summary, SF-36 MCS Short Form 36 Health Questionnaire Mental Component Summary, ITAQ Insight and Treatment Attitudes Questionnaire, DAI Drug Attitude Inventory, S.D. Standard Deviation, N Number
  2. Reported correlations are statistically significant at the *p < 0.05 level; or ***p < 0.001