精神分裂症首次发病患者未治期的影响因素分析

目的：探讨首发精神分裂症患者未治期（ DUP）的影响因素。方法：采用一般资料调查表、阳性与阴性症状量表（ PANSS）、诺丁汉起病症状量表（ NOS）以及疾病家庭负担量表（ FBS）对206例首次发病精神分裂症患者的疾病严重程度、起病形式以及因疾病给家庭带来的负担进行评估。结果：首发精神分裂症患者DUP的中位数为6（2,12）个月,其中男性5（1,12）个月,女性7（2,12）个月,男女比率差异无统计学意义（P>0.05）。将患者分为短DUP组（DUP≤6个月）112例和长DUP组（DUP>6个月）94例比较结果显示,不同DUP组的起病形式（χ2=61.99,P=0.000）、家属对患者的关心程度（t=4.09,P=0.000）、疾病对家庭娱乐活动的影响（t=-2.22,P=0.03）以及疾病对家庭成员心理健康的影响（t=-2.53,P=0.01）两组间存在统计学意义。Logistic 回归分析发现,起病形式（ OR =11.46,95%CI =5.70~23.04）是DUP的危险因素;家属对患者的关心程度（OR=0.73,95%CI=0.60~0.90）是DUP的保护性因素。结论：影响首发精神分裂症患者DUP的因素是多方面的,但起病形式及家属对患者的关心程度是主要因素。     

Influence of duration of untreated psychosis on auditory P300 in drug-naive and first-episode schizophrenia

P300 amplitude reduction in schizophrenia is, according to previous studies, partially recovered by treatment with neuroleptics. However, whether this medication-induced P300 recovery is associated with duration of untreated psychosis (DUP) remains unreported; the present study is a preliminary examination of this question. Auditory P300 was recorded from 18 drug-naive and first-episode schizophrenia patients, among whom 10 were identified as short DUP, and eight as long DUP. Follow-up event-related potential tests were carried out after treatment with haloperidol or bromperidol for approximately 2 months. Recovery of P300 amplitude was replicated after neuroleptic medication was administered. A significant interaction was found between DUP and the medication effect in P300 amplitude over the left temporo-parietal area; a significant P300 recovery was seen in short DUP but not in long DUP. These results suggest that first-episode schizophrenia patients with long DUP might have severe impairments in the left temporal structures, supporting DUP as a key variable in future neurobiological studies of first-episode schizophrenia.     

Stigma and treatment delay in first-episode psychosis: a grounded theory study

Aim: A longer duration of untreated psychosis (DUP) is associated with greater morbidity in the early course of schizophrenia. This formative, hypothesis-generating study explored the effects of stigma, as perceived by family members, on DUP. Methods: Qualitative interviews were conducted with 12 African American family members directly involved in treatment initiation for a relative with first-episode psychosis. Data analysis relied on a grounded theory approach. A testable model informed by constructs of Link's modified labelling theory was developed. Results: Four main themes were identified, including: (i) society's beliefs about mental illnesses; (ii) families' beliefs about mental illnesses; (iii) fear of the label of a mental illness; and (iv) a raised threshold for the initiation of treatment. A grounded theory model was developed as a schematic representation of the themes and subthemes uncovered in the family members' narratives. Conclusions: The findings suggest that due to fear of the official label of a mental illness, certain coping mechanisms may be adopted by families, which may result in a raised threshold for treatment initiation, and ultimately treatment delay. If the relationships within the grounded theory model are confirmed by further qualitative and quantitative research, public educational programs could be developed with the aim of reducing this threshold, ultimately decreasing DUP.     

Duration of untreated psychosis and its correlates in first-episode psychosis in Finland and Spain

OBJECTIVE: To examine the association of duration of untreated psychosis (DUP) with early course characteristics in first-episode psychosis in Finland and Spain. METHOD: Eighty-six patients from Finland (49) and Spain (37) were evaluated on various early course characteristics. RESULTS: The mean value of DUP was 4.0 months (median 2 months) for the Finnish patients and 9.9 months (median 2 months) for the Spanish ones. In both groups, long DUP was associated with insidious onset, poor global functioning, and laboral incapability. Among the Finnish patients exclusively, long DUP correlated with a weak earlier social network, instability of professional identity, long duration of prodromal symptoms, psychological dependency on the family, and criticism by the parents of the patient. Among the Spanish patients only, longer DUP was associated with more severe positive symptoms at admission. CONCLUSION: There are universal psychosocial factors influencing DUP, but also cultural differences may have an impact on the treatment delay.     

首发精神分裂症患者持续缓解的预测因素分析

目的:探讨首发精神分裂症患者1年持续缓解的临床与认知预测因素。方法:44例首发精神分裂症患者给予抗精神病药治疗1年,并在基线期采集患者人口学和临床资料,同时采用阳性与阴性症状量表(PANSS)评估疾病症状以及霍普金斯词语学习测验中文修订版(HVLT-R)、Stroop词色测验、彩色连线测验、词语流利测验中文版(VFT:VFL和VFC)评估认知功能;在治疗后4、8、12、24、36周和1年时随访,从第8周末至1年期间,历次访视PANSS量表8个核心条目评分均≤3分者被视为持续缓解(持续缓解组),其他患者视为病情波动(病情波动组)。结果:42例患者完成1年随访,其中24例(57.1%)患者持续缓解;与病情波动组(18例)比较,持续缓解组具有未治疗精神病期(DUP)较短、阴性症状较轻、阳性症状较重、HVLT-R和VFC得分较高的特点(P0.05或P0.001)。多元Logistic回归分析表明持续缓解的患者具有DUP短(OR:0.791,95%CI:0.629~0.995;P=0.003)、阴性症状分低(OR:0.775,95%CI:0.609~0.987;P=0.012)及阳性症状分高(OR:1.706,95%CI:1.040~2.800;P=0.004)是持续缓解的独立预测因素。结论:DUP短、阴性症状较轻、阳性症状较重是首发精神分裂症患者持续缓解的独立预测因素。     

Duration of untreated psychosis may predict acute treatment response in first-episode schizophrenia

There is growing evidence for a relationship between the duration of untreated psychosis (DUP) and the prognosis in schizophrenia. The objective of this study is to evaluate whether DUP and premorbid level of social functioning are related to treatment response in acute treatment of first-episode schizophrenia. Seventy-nine first-episode schizophrenia patients were assessed with BPRS, SAPS, and SANS on admission and discharge during their first hospitalisation. Percentage of the difference between admission and discharge in total scores of all scales were taken as measures of absolute symptom reduction. The median DUP was 6 months (mean=8.6). DUP was correlated with reduction in BPRS and SAPS scores but not SANS scores. Patients with a short DUP (n=41) also showed a higher reduction in BPRS, and SAPS scores than those with a long DUP. Premorbid Adjustment Scale (PAS) scores were inversely correlated with age at onset and positively correlated with BPRS scores at admission. We did not find any relationship between PAS scores and response to treatment. Our findings suggest that DUP may be an important predictor of response in acute treatment of first-episode schizophrenia and thus, attempts for early diagnosis may also have a positive effect on acute treatment response.     

Duration of untreated psychosis and 12-month outcome in first-episode psychosis: the impact of treatment approach

Carbone S, Harrigan S, McGorry PD, Curry C, Elkins K. Duration of untreated psychosis and 12-month outcome in first-episode psychosis: the impact of treatment approach. Acta Psychiatr Scand 1999: 100 : 96–104. © Munksgaard 1999. Objective: Early intervention research is examining whether reducing the duration of untreated psychosis (DUP) leads to improved outcome from first-episode psychosis. Another key influence may be the quality of treatment after initiation of care. This study examined the effect of phase-specific treatment on 12-month outcome for different categories of DUP. Method: A total of 250 first-episode psychosis cases were followed up 12 months after stabilization. The sample consisted of two historically sequential cohorts treated in the same region within different service models, one of which was more intensive and phase-specific. Outcome was compared according to four predefined categories of DUP. Results: Only patients with a mid-range DUP of 1–6 months who were treated within the phase-specific model experienced significantly better outcomes than patients treated within the previous model. Conclusion: These data suggest that there may be a limited window of opportunity in which to influence outcome. However, the complexity of this relationship is emphasized.     

Duration of untreated psychosis,ethnicity, educational level,and gender in a multiethnic South‐East Asian country: report from Malaysia schizophrenia registry

Introduction: Duration of untreated psychosis (DUP) determines the outcome of schizophrenia. Previously, there was no information about the DUP among patients in Malaysia with schizophrenia. The aim of the present study was to investigate the association between DUP and patients' demographic, social cultural background and clinical features. Method: This is a cross‐sectional study on patients who presented with first episode schizophrenia. Data from 74 primary care centers and hospitals between 1 January 2003 and 31 December 2007 were included in the analysis. All patients with first‐episode schizophrenia were enrolled in the study. Results: The mean DUP was 37.6 months. The indigenous community appeared to have the shortest DUP compared to the Malay, Chinese and Indian communities. Female, people with lower educational level, and comorbidity with medical illness during contact had longer DUP. Discussion: DUP in this multiethnicity country was found to be significantly short among the indigenous people, which may sugest that traditional values and strong family and community ties shorten the DUP. Educational level may need to be further investigated, because as upgrading the general educational level could lead to shorter DUP among the patients as well.     

Duration of untreated psychosis in a rural/suburban region of Japan

Aims: We examined the duration of untreated psychosis (DUP) and its social and clinical correlates in patients with schizophrenia in a rural/suburban region of Japan. Methods: We conducted a retrospective cohort study of patients with first‐episode psychosis from 11 hospitals in Kochi Prefecture. There were 108 patients who met the eligibility criteria, and data regarding their DUP and social/clinical variables were collected. Results: The median (mean) DUP of our cohort was 10.5 (34.6) months. Longer DUP was associated with younger age at onset, older age at first consultation, less educational attainment, insidious mode of onset and not being accompanied by another person at first consultation. After adjusting for confounding factors, age at onset, age at first consultation and mode of onset remained significantly and independently associated with DUP. In terms of treatment and response, longer DUP was associated with less antipsychotics prescribed upon first visit, and worse Clinical Global Impression Severity and Improvement scores after 1 year. Conclusion: The patients treated in a rural/suburban region of Japan had a long DUP, and shortening their DUP through promoting family involvement could improve their outcomes.     

首发精神分裂症患者就诊途径调查

目的：调查首发精神分裂症患者在精神病医院和非精神病医院就诊途径。方法：完成对71例首发患者及家属调查,包括人口学资料、非精神病专科就诊情况、延迟至精神科求助原因、精神科就诊途径及原因、精神病未治疗期病程等。结果：非精神科主要求助方式为宗教迷信和非专科医生;精神科求助途径主要为家属意愿;精神病未治疗期病程（DUP）中位数为6个月,未发现DUP与其他调查因素相关;造成延迟至精神科求助主要原因是患者及家属对精神卫生知识缺乏。结论：加强社区精神卫生知识宣传普及对于缩短DUP非常必要。     

青海省藏族精神分裂症未治期及影响因素分析

目的探讨藏族精神分裂症患者精神病未治期(duration of untreated psychosis,DUP)的影响因素。方法采用精神分裂症患者精神卫生服务利用调查问卷及精神分裂症首发症状评定量表对188例藏族精神分裂症患者的社会人口学资料、精神疾病家族史、家庭类型、起病形式、医疗付款方式、居住地、自评家庭收入水平、首发症状出现的时间等进行调查,分析DUP影响因素。结果患者DUP呈偏态分布,中位数375 d(QL=4 d,QU=1661 d)。将患者分为短DUP组(DUP≤375 d)90例和长DUP组(DUP375 d)98例,不同DUP组患者的起病形式、婚姻状况、文化程度、家庭类型、居住地的组间差异有统计学意义(P0.05)。DUP影响因素的logistic回归分析显示,结构缺失的家庭(OR=2.340,95%CI:1.130~4.847,P=0.022)、慢性起病(OR=2.136,95%CI:1.172~3.891,P=0.013)、居住在农牧区(OR=2.239,95%CI:1.097~4.571,P=0.027)与长DUP相关联。结论藏族精神分裂症DUP较长,受多种因素影响,主要的危险因素有结构缺失的家庭、慢性起病、居住在农牧区。     

Duration of untreated psychosis: a proposition regarding treatment definition

Aim: Duration of untreated psychosis (DUP) refers to the time elapsing between psychosis onset and treatment initiation. Despite a certain degree of consensus regarding the definition of psychosis onset, the definition of treatment commencement varies greatly between studies and DUP may be underestimated due to lack of agreement. In the present study, three sets of criteria to define the end of the untreated period were applied in a first‐episode psychosis cohort to assess the impact of the choice of definition on DUP estimation. Methods: The DUP of 117 patients admitted in the Treatment and Early Intervention in Psychosis Program Psychosis in Lausanne was measured using the following sets of criteria to define treatment onset: (i) initiation of antipsychotic medication; (ii) entry into a specialized programme; and (iii) entry into a specialized programme and adequate medication with a good compliance. Results: DUP varied greatly according to definitions, the most restrictive criteria leading to the longest DUP (median DUP1 = 2.2 months, DUP2 = 7.4 months and DUP3 = 13.6 months). A percentage of 19.7 of the patients who did not meet these restrictive criteria had poorer premorbid functioning and were more likely to use cannabis. Longer DUP3 was associated with poorer premorbid functioning and with younger age at onset of psychosis. Conclusion: These results underline the need for a unique and standardized definition of the end of DUP. We suggest that the most restrictive definition of treatment should be used when using the DUP concept in future research.     

Improving detection of first-episode psychosis by mental health-care services using a self-report questionnaire

Objective: To examine the utility of the Community Assessment of Psychic Experiences (CAPE)‐42, a self‐report questionnaire, to improve detection of first‐episode psychosis in new referrals to mental health services. Method: At first contact with mental health‐care services patients were asked to complete the CAPE‐42 and were then routinely diagnosed by a clinician. Standard diagnoses were obtained by means of the mini‐Schedule for Clinical Assessment in Neuropsychiatry. Results: Of the 246 included patients, 26 (10.6%) were diagnosed with psychosis according to the mini‐Schedule for Clinical Assessment in Neuropsychiatry. Only 10 of them were recognized by clinical routine, and 16 psychotic patients were not properly identified. Using an optimal cut‐off of 50 on the frequency or distress dimension of the positive subscale of the CAPE‐42 detected 14 of these misdiagnosed patients. The sensitivity of the CAPE‐42 at this cut‐off point was 77.5 and the specificity 70.5. Conclusion: Systematic screening of patients using a self‐report questionnaire for psychotic symptoms improves routine detection of psychotic patients when they first come into contact with mental health services.