中文版SF-36量表在浙江省老年人群健康生命质量评价中的信度和效度

目的 评价中文版SF-36量表在老年人群健康生命质量评价中的信度和效度.方法 2007年10-12月统一受训的调查员使用含中文版SF-36量表的问卷对浙江省城乡4241名60周岁以上的老年人面对面询问式调查,采用相关分析、信度分析、因子分析、t检验和方差分析等统计学方法 评价量表的信度和效度.结果 中文版SF-36量表具有较好的分半信度(r=0.91,P<0.001),内部一致性信度α系数除生命活力(α=0.65)、社交功能(α=0.65)、心理健康(α=0.40)维度外,其余维度的α系数均>0.8.每个条目跟相关维度的相关系数均>0.4(条目9-2除外),且高于该条目与其他维度的相关系数(条目9-8除外),说明中文版SF-36量表有良好的集合效度和区分效度.35个条目在提取的6个公因子中的分布与量表的理论结构假设基本一致,累计贡献达67.04%.除心理健康维度外,各维度具有良好的判别效度.结论 中文版SF-36量表有较好的信度和效度,适用于老年人群健康生命质量评价,但量表心理健康维度的信度与效度较低,且其中的9-2、9-8以及躯体功能维度中的3-1条目不适合于中国老年人群.     

社区卫生服务绩效评价指标体系的信度与效度评价

目的研究社区卫生服务评价指标体系的信度、效度和区分度,为建立科学的社区卫生服务评估体系提供方法学指导。方法在对湖北省12个行政区的社区卫生服务绩效进行评价的基础上,检验指标体系内部的信度、结构效度和区分效度。结果二级指标和三级指标的Cronbachα标准值分别为0.919、0.959;二级指标因子分析共提取3个因子,累积贡献率达到78.556%;通过样本聚类,12个行政区可分为好、中、差3类。结论对指标体系进行效度和信度的评价是进行实际评价工作的前提,其评价方法应根据实际情况正确选用;本次用于信度和效度检验的社区卫生服务评价指标体系具有较好的结构效度、内部连续性测量信度和区分效度。     

SF-36量表在SARS康复人员中应用的信度和效度评价

【目的】评价SF-36量表用于SARS康复人员生活质量的信度和效度。【方法】对天津市SARS康复人员进行问卷调查,问卷由被调查对象自己填写。计算各条目得分,采用相关分析、Cronbach′sα系数和因子分析的方法分析信度和效度。【结果】SF-36问卷8个健康标度的Cronbach′sα系数都大于0.70;效度分析显示,8个标度的集合效度均达到100%,除总体健康(GH)外,其他各标度的区分成功率都大于90%。判别效度分析结果显示与理论推断结果一致。因子分析产生了2个主成分,解释了总方差的71.95%,分别代表生理健康和心理健康。【结论】SF-36问卷用于SARS康复人群信度和效度良好,适于对该人群的生命质量进行评价。     

《大学生预防艾滋病知识与能力》调查问卷信度与效度分析

目的评价自行设计《大学生预防艾滋病知识与能力》调查问卷的信度和效度。方法随机选择天津外国语学院205名大学生作为调查对象,并对同一人群进行2次问卷调查,计算该问卷的内部一致性、重测信度和结构效度。结果该问卷的6个模块中,大部分模块Cronbach’s系数>0.6,70%的题目重测一致率在0.7或Spearman等级相关系数>0.4。结构效度较好,11个公因子可解释问卷全部内容的60%。结论该问卷的信度和效度较好,可用于评价大学生预防艾滋病知识与能力水平。     

Feasibility, reliability, and validity of adolescent health status measurement by the Child Health Questionnaire Child Form (CHQ-CF): internet administration compared with the standard paper version

Aims In this study we evaluated indicators of the feasibility, reliability, and validity of the Child Health Questionnaire-Child Form (CHQ-CF). We compared the results in a subgroup of adolescents who completed the standard paper version of the CHQ-CF with the results in another subgroup of adolescents who completed an internet version, i.e., an online, web-based CHQ-CF questionnaire. Methods Under supervision at school, 1,071 adolescents were randomized to complete the CHQ-CF and items on chronic conditions by a paper questionnaire or by an internet administered questionnaire. Results The participation rate was 87%; age range 13–17 years. The internet administration resulted in fewer missing answers. All but one multi-item scale showed internal consistency reliability (Cronbach’s α > 0.70). All scales clearly discriminated between adolescents with no, a few, or many self-reported chronic conditions. The paper administration resulted in statistically significant, higher scores on 4 of 10 CHQ-CF scales compared with the internet administration (P < 0.05), but Cohen’s effect sizes d were ≤ 0.21. Mode of administration interacted significantly with age (P < 0.05) on four CHQ-CF scales, but Cohen’s effect sizes for these differences were also ≤ 0.21. Conclusion This study supports the feasibility, internal consistency reliability of the scales, and construct validity of the CHQ-CF administered by either a paper questionnaire or online questionnaire. Given Cohen’s suggested guidelines for the interpretation of effect sizes, i.e., 0.20–0.50 indicates a small effect, differences in CHQ-CF scale scores between paper and internet administration can be considered as negligible or small.     

Validation of the Chinese version of the Schizophrenia Quality of Life Scale Revision 4 (SQLS-R4) in Taiwanese patients with schizophrenia

We tested the reliability, sensitivity, and validity of a Chinese translation of the Schizophrenia Quality of Life Scale Revision 4 (SQLS-R4). One hundred Taiwanese individuals with schizophrenia were recruited. The internal consistency reliability was satisfactory for both the psychosocial and vitality domains (Cronbach’s α = 0.92, 0.84). The test–retest reliability was also high (psychosocial: ICC = 0.84, vitality: ICC = 0.84) for those individuals whose psychological conditions remained stable between the two-week interval. However, the responsiveness coefficient for those with considerable changes in psychological conditions ranged from very small to moderate, suggesting either low responsiveness for the vitality domain or a complex relationship between the change of psychological conditions and quality of life, and the need to estimate responsiveness more conclusively in a future intervention study. The convergent validity was supported by moderate-to-large correlations between domains measuring related constructs of the SQLS-R4 and SF-36 (r = −0.65 to −0.67). Overall, the results of this study provide preliminary evidence for the reliability and validity of the SQLS-R4 used in Taiwanese individuals with schizophrenia. This study provides a common ground for international researchers to understand quality of life in Taiwanese patients with schizophrenia.     

三种血细胞分析仪测定指标可靠性评价分析

目的 评价三型常用血细胞分析仪的主要测定指标的可靠性.方法 根据1984年国际血液学标准化委员会ICSH公布的关于自动血细胞计数仪评价的文件,用标准全血质控液以WBC、RBC、HB、HCT、PLT 5个测试项目评价Sysmex T-2000i、Sysmex KX 21N和Beekinan Coulter AcT diff2三型血细胞分析仪的批内精密度、批间精密度、高低互染率等指标,然后比较20份患者新鲜全血样本在三型仪器上的测定数据.结果 三型血细胞分析仪的测定结果批内精密度、批间精密度、高低互染率等结果经单个样本t检验差异无统计学意义（P＞0.05）;患者标本在三型仪器上的测定结果经两两配对t检验分析差异无统计学意义（P＞0.05）.结论 三型血细胞分析仪的主要性能指标均符合要求,5项测定指标结果差异在允许范围内;同一实验室对不同血细胞分析仪结果进行定期比对和每天以新鲜全血标本对血细胞分析仪进行质控十分重要,是保证检测结果准确可靠的有效方法.     

Interobserver reliability of the italian version of the geriatric mental state examination

The Italian version of the Geriatric Mental State Examination (GMS) was tested for interrater agreement (interobserver). Thirty geriatric patients form psychiatry, neurology and general medical facilities were interviewed by four raters. The mean values of kappa and phi for the analysable items were 0.80 and 0.81. ‘Organic’ and ‘functional’ items produced very similar coeffcient values.     

Gingival bleeding on repeat probing after different time intervals in plaque-induced gingivitis

The aim of this study was to assess agreement and association of gingival bleeding after repeated probing at different time intervals in subjects with gingivitis. Twenty adults participated. Periodontal probing (P≈1.27 MPa) was conducted at six sites of every tooth present. Probing was repeated in different quadrants immediately after the first probing (T0), after 1 h (T1), 4 h (T4), and 24 h (T24). A total of 3,459 sites were probed twice. The mean proportion of sites bleeding on probing (BOP) was 0.23 (standard deviation 0.08, range 0.10–0.41). Probing itself had a significant effect on the results of repeated probing. For T0 through T24, respective mean differences of proportions were 0.04, 0.04, 0.01, and −0.03. Ninety-five percent repeatability coefficients of proportions were 0.17–0.18. Estimates of overall kappa were 0.390, 0.234, 0.233, and 0.046 for T0 through T4, respectively. Adjusted two-level binary response models revealed odds ratios (95% confidence interval) for BOP at T0 through T4 of 6.52 (4.34, 9.80), 3.23 (2.19, 4.76), 3.80 (2.63, 5.50), and 2.68 (1.85, 3.89). It was concluded that a certain degree of agreement of site-specific bleeding scores in subjects with plaque-induced gingivitis could be observed only if probing was repeated at once. Adjusted associations between repeat BOP were weak in general, but strongest immediately after first probing. There appears to be a significant effect of probing itself, which may last for more than 1 h, whereas 24-h results are obtained under different conditions.     

Reliability of cause-specific mortality rate statistics: case of Lithuania

OBJECTIVES: To evaluate the reliability of cause-specific mortality rate statistics. STUDY DESIGN: The underlying causes of death among different demographic groups in a territorial unit of Lithuania were verified and the data were compared with the corresponding official statistics. METHODS: Community-based autopsy and expert analysis of medical records. RESULTS: The study contingent consisted of 1474 permanent residents aged 0-101 years [809 (54.9%) males and 665 (45.1%) females] who had died in hospital (n=546, 37%) and out of hospital (n=928, 63%) in 1989-1991. The underlying cause of death was verified in 98.6% of cases by full autopsy (69.9%) and expert analysis of medical records (28.7%). Circulatory system diseases were found to be implicated in 44.4% of all deaths (35.9% of males and 54.7% of females), malignant neoplasms were the cause of 19.4% of deaths (21.5 and 16.8%, respectively) and external causes were responsible for 19.4% of deaths (27.3 and 9.8%, respectively). Cause-specific mortality rates were sex and age dependent. CONCLUSIONS: The proportion of circulatory system diseases in the cause-specific mortality structure was found to be significantly lower, and that of external causes (injury and poisoning) was found to be higher than the corresponding proportions presented by official Lithuanian statistics. Verified cardiovascular death rates corresponded with those in the European Union as a whole.