Quantitative study on the characteristics of the tree-drawing test in schizophrenia patients / 中华行为医学与脑科学杂志

ABSTRACT

Objective@#To explore the characteristic indexes of patients with schizophrenia trees drawing projection through the extraction and quantitative analysis of the projection index of the tree-drawing painted by schizophrenic patients and provide the basis for the diagnosis of schizophrenia.@*Methods@#A tree-drawing test was performed on 69 schizophrenic patients and 59 healthy subjects without psychotic symptoms using the control study design.Computer image recognition and data acquisition was used to quantitatively research on tree projection drawing, and the data were analyzed between the two groups.@*Results@#There were 6 tree-drawing test quantitative indexes had statistical significance between schizophrenia patients and healthy subjects: crown height ((7.4380±3.7939)cm vs (8.9587±3.6632)cm, t=-2.386, P=0.018), crown width ((9.3441±4.7054)cm vs (12.1024±4.7836)cm, t=-3.281, P<0.01), trunk width ((2.3391±2.3857)cm vs (3.7313±2.2822), t=-3.357, P=0.001), crown area ((65.1007±56.2188)cm2 vs (90.8369±61.9536)cm2, t=-2.463, P=c.015), trunk area ((12.8060±17.3851)cm2 vs (19.3813±15.3874)cm2, t=-2.248, P=0.026), the total area ((82.3225±71.7906)cm2 vs (114.5269±73.8087)cm2, t=-2.497, P=0.014), meanwhile 7 quantitative indexes were not statistically significant the total height of trees ((13.9728±5.8815)cm vs (15.8957±5.4399)cm, t=-1.908, P=0.059), trunk height ((6.4989±5.8861)cm vs (6.4311±3.0242)cm, t=0.080, P=0.936), root height ((0.7321±1.2916)cm vs (0.4780±1.0912)cm, t=1.191, P=0.236), root width ((1.7597±3.5406)cm vs (2.2041±4.8122)cm, t=-0.600, P=0.549), root area ((4.3920±10.8128)cm2 vs (4.3774±12.4586)cm2, t=0.007, P= 0.994), trunk and crown height ratio ((9.0236±15.1846) vs (5.1478±9.0970, t=-0.526, P=0.600), trunk crown width ratio (9.0236±15.1846 vs 5.1478±9.0970, t=1.489, P=0.14).@*Conclusion@#There are significant traits in the area of crown, trunk and tree in the tree drawing projection test between schizophrenics and healthy subjects.After future large sample follow-up study, it can provide quantitative assistance for clinical diagnosis.