IPSS问卷回顾性调查数据准确性的研究

A prospective investigation on accuracy of data obtained from IPSS questionnaire

目的 了解IPSS问卷临床应用性调查数据的准确程度。方法 对 2 0 4名 5 7～ 72岁男性采用IPSS问卷 (增加了四个排尿症状 )进行回顾性调查 ,被调查者记录 1个月排尿日记 ,进行前瞻性调查。对配对数据的差别进行显著性和相关性检验。 结果 在全部 13个项目中 ,有 8个项目的分值差别有统计学意义 ,平均分值回顾性大于前瞻性 ,差值为 0 .12～ 1.2 9分。IPSS总分的平均差值为 0 .86分 ,标准差 4.0 7分 ,有 2 3 .5 %的被调查者症状分级程度发生了改变 ,IPSS总分发生改变者占89 7% ,回顾法所得数据的准确率为 2 2 .1% ,高估率和低估率分别为 45 .1%和 32 .8%。前瞻性与回顾性调查之间分值的相关性在各个项目均属中等水平。 结论 采用IPSS问卷进行回顾性调查时 。

Objective To evaluate the accuracy of data obtained from the IPSS questionnaire in clinical investigation. Methods An extended IPSS questionnaire (with questions on four other voiding symptoms added to the standard IPSS) was administered to 204 men aged 57～72. Then in a following prospective investigation, the subjects were asked to keep a voiding diary for 4 weeks. Finally, the differences and correlation in the paired data were tested for their statistical significance. Results The differences in the mean scores of 8 matched pair items among the total 13 items in the two investigations were found to be statistically significant, the mean values of the deviations range from 0.12 to 1.29 points, with all of the mean scores from the prospective investigation being lower than those from the first questionnaire.The mean value of the deviations for the total scores (IPSS) is 0.87 points and its standard deviation is 4.07 points. The symptom categories has been changed in the prospective investigations occurred in 23.5% of the total 204 subjects and those whose total scores (IPSS) were changed in 89.7%. The results of this comparative study show that the rates of correctness, overestimation and underestimation of the data collected from the conventional IPSS questionnaire are 22.1%, 45.1% and 32.8% respectively. Medium level correlation exit between corresponding scores of all items in the two investigations. Conclusions The data obtained from conventional IPSS questionnaire diverges substantially from the actual conditions in most subjects.