Table 1
Demographic and clinical characteristics of the schizophrenia patients and healthy comparison subjects
attentional performance
Table 2 shows the descriptive statistics of all the attentional tasks. The t test results (Table 2) comparing the patient group and the healthy control group for different attentional tests were significant. The group of patients with chronic schizophrenia performed significantly lowers than expected compared to the healthy control group in all tasks. In the test of attentional span (Digits Forward) the control group achieved a length attentional of 7 digits approximately, while the group of patients achieved 5 digits (t = 6.33; p = < 0.001). In the sustained attention tasks also showed deficits in the performance of the group of patients. For example, in the Symbol Search test the control group averaged 25 correct answers in the two minutes it takes the task, while the group of patients averaged only 10 correct answers (t = 10.29; p = < 0.001). In the task of Digit Symbol Coding, the patient group only achieved complete 27 symbols correctly, while the control group reached 60 symbols (t = 12.55; p = < 0.001). Another case is the Word Stroop task, where patients achieved reading in a loud voice for 45 seconds a total of 63 words compared to healthy control group who read a total of 99 words (t = 8.33; p = < 0.001). In the Picture Completion task of selective attention, the healthy control group was able to establish the missing part of 18 figures, while the schizophrenia group could only do it for 9 figures (t = 8.66; p = < 0.001). Meanwhile, in the Word Colour Stroop task, patients were able to correctly answer only 15 items, compared to healthy control group who managed to correctly say the colour of the ink in which 42 words were printed (t = 11.31; p = < 0.001).
ตารางที่ 1ลักษณะทางประชากร และทางคลินิกของผู้ป่วยโรคจิตเภทและเปรียบเทียบสุขภาพเรื่องประสิทธิภาพ attentionalTable 2 shows the descriptive statistics of all the attentional tasks. The t test results (Table 2) comparing the patient group and the healthy control group for different attentional tests were significant. The group of patients with chronic schizophrenia performed significantly lowers than expected compared to the healthy control group in all tasks. In the test of attentional span (Digits Forward) the control group achieved a length attentional of 7 digits approximately, while the group of patients achieved 5 digits (t = 6.33; p = < 0.001). In the sustained attention tasks also showed deficits in the performance of the group of patients. For example, in the Symbol Search test the control group averaged 25 correct answers in the two minutes it takes the task, while the group of patients averaged only 10 correct answers (t = 10.29; p = < 0.001). In the task of Digit Symbol Coding, the patient group only achieved complete 27 symbols correctly, while the control group reached 60 symbols (t = 12.55; p = < 0.001). Another case is the Word Stroop task, where patients achieved reading in a loud voice for 45 seconds a total of 63 words compared to healthy control group who read a total of 99 words (t = 8.33; p = < 0.001). In the Picture Completion task of selective attention, the healthy control group was able to establish the missing part of 18 figures, while the schizophrenia group could only do it for 9 figures (t = 8.66; p = < 0.001). Meanwhile, in the Word Colour Stroop task, patients were able to correctly answer only 15 items, compared to healthy control group who managed to correctly say the colour of the ink in which 42 words were printed (t = 11.31; p = < 0.001).
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