van Haarst Ernst P, Bosch J L H Ruud
Department of Urology, Sint Lucas Andreas Ziekenhuis, Amsterdam, The Netherlands.
Neurourol Urodyn. 2014 Mar;33(3):296-301. doi: 10.1002/nau.22410. Epub 2013 Oct 26.
To assess Frequency-volume charts (FVCs) for the yield of additional recorded days and the ideal duration of recording related to compliance and reliability.
Of 500 consecutive urologic outpatients willing to complete a 7-day FVC, 378 FVCs were evaluable. During seven consecutive days every voiding time and volume were recorded. Missed entries were indicated with a coded letter, thereby assessing the true frequency and compliance. Reliability is the agreement of the day-to-day FVC parameters with the 7-day FVC pattern. Single-day reliability was assessed and used in the Spearman-Brown formula.
FVCs of 228 male and 150 females were evaluated. Mean age was 55.2 years (standard deviation [SD]: 16.2 years), and mean 24-hr urine production was 1,856 ml (SD: 828 ml). The percentage of patients with complete FVCs decreased from 78% on day 2 to 58% on day 7, and dropped below 70% after 4 days. Single-day reliability was r = 0.63 for nocturnal urine production, r = 0.72 for 24-hr urine production, and r = 0.80 for mean voided volume. At 5 days, reliability of 90% was achieved for all parameters.
With each additional day, FVCs showed a decrease in compliance and an increase in reliability. At day 3, reliability of 80% was achieved for all FVC parameters, but compliance dropped to 73%. Beyond 5 days, the yield of additional recorded days was limited. We advocate an FVC duration of 3 days, but the duration may be shortened or extended depending on the goal of the FVC.
评估排尿频率-尿量图表（FVC）在获取额外记录天数方面的情况以及与依从性和可靠性相关的理想记录时长。
在500名愿意完成为期7天FVC的连续泌尿外科门诊患者中，378份FVC可进行评估。在连续7天内记录每次排尿的时间和尿量。漏记的条目用编码字母表示，从而评估实际排尿频率和依从性。可靠性是指每日FVC参数与7天FVC模式的一致性。评估单日可靠性并将其用于斯皮尔曼-布朗公式。
评估了228名男性和150名女性的FVC。平均年龄为55.2岁（标准差[SD]：16.2岁），平均24小时尿量为1856毫升（SD：828毫升）。完整FVC患者的比例从第2天的78%降至第7天的58%，4天后降至70%以下。夜间尿量的单日可靠性r = 0.63，24小时尿量的r = 0.72，平均排尿量的r = 0.80。在第5天，所有参数的可靠性达到90%。
随着记录天数增加，FVC的依从性下降而可靠性增加。在第3天，所有FVC参数的可靠性达到80%，但依从性降至73%。超过5天，额外记录天数的收益有限。我们主张FVC记录时长为3天，但时长可根据FVC的目标缩短或延长。
