BACKGROUND:Surveys of the population are commonly used to obtain information on health status. Increasingly, researchers are linking self-reported health status information to primary care consultation data. However, it is not known how participating in a health-related survey affects consultation behaviour. The objective of this study was to assess whether completion of a health-related questionnaire changes primary care consultation behaviour. METHODS:Participants were 3402 adults aged 50 and over from the general population in North Staffordshire, UK, who completed a health-related postal survey received in April 2003. The survey was predominantly about occurrence and severity of knee pain in the last year. Primary care attendance for the three months following response was compared to three control periods: i) the three months prior to the survey, ii) the same time period in the previous year and iii) the same time period in the following year. Comparisons were made on consultations for any problem, consultations for musculoskeletal disorders and consultations for knee problems. RESULTS:The percentage of subjects consulting for any condition was marginally higher for the three months directly after receipt of the questionnaire but the difference was only statistically significant in comparison to the three months before the survey (64% v. 62%, p = 0.05). There was little difference in consultation prevalence for musculoskeletal problems immediately after the survey compared to the three control periods. There was an increase of 37% in knee disorder consultations for the three months after the survey compared to the three months directly before the survey (p = 0.02). However, consultation prevalence for knee problems was identical for the three months after the survey to the same time periods in the years prior to and following the survey (both p = 0.94). CONCLUSION:The results from this study suggests that questionnaires related to physical health do not affect the standard consulting behaviour of patients, even for the symptom under investigation. This should reassure researchers who wish to link self-reported health status and medical care utilisation and clinicians whose patients are involved in such research.

译文

背景:人口调查通常用于获取有关健康状况的信息。研究人员越来越多地将自我报告的健康状况信息与初级保健咨询数据联系起来。但是,尚不清楚参与健康相关调查如何影响咨询行为。这项研究的目的是评估完成与健康有关的问卷是否会改变初级保健咨询的行为。
方法:参与者为英国北部斯塔福德郡(North Staffordshire)英国普通人群的3402名年龄在50岁及以上的成年人,他们于2003年4月完成了一项与健康相关的邮政调查。该调查主要是关于去年膝盖疼痛的发生和严重程度。将响应后三个月的基层医疗出勤率与三个对照期进行比较:i)调查前三个月,ii)上一年的相同时间段,iii)下一年的相同时间段。对任何问题的咨询,肌肉骨骼疾病的咨询和膝盖问题的咨询进行了比较。
结果:在收到问卷后的三个月中,针对任何情况进行咨询的受试者的百分比略高,但与调查前的三个月相比,差异仅在统计上具有统计学意义(64%对62%,p = 0.05 )。与三个对照期相比,调查后立即就骨骼肌肉问题进行咨询的患病率差异不大。与调查前三个月相比,调查后三个月的膝关节疾病咨询增加了37%(p = 0.02)。但是,在调查后的三个月中,膝盖问题的咨询患病率与调查前后几年中的相同时间段相同(均为p = 0.94)。
结论:这项研究的结果表明,与身体健康相关的问卷不会影响患者的标准咨询行为,即使对于所调查的症状也是如此。这应该使希望将自我报告的健康状况和医疗利用联系起来的研究人员以及患者参与此类研究的临床医生得到保证。

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