Blood Transfusion Research Centre, Higher Institute for Research and Education in Transfusion Medicine, Shiraz, Iran.
Blood Transfus. 2012 Oct;10(4):448-52. doi: 10.2450/2012.0097-11. Epub 2012 Apr 13.
The aim of this study was to determine any relationships between return rates of first-time donors, number of donations in the first year and the donors' demographic characteristics.
Data from 1,500 volunteer, first-time donors who donated blood at Shiraz Blood Transfusion Centre (Iran) were obtained from the donor database. The donors' demographic characteristics (sex, age, educational status) and donation histories were obtained for a 3-year period and the number of donations and interval between the first donation and the following donation within a 1-year period were recorded. We searched for correlations between return rate and demographic characteristics and the number of donations in the first, second and third years. The data were analysed with the chi-squared test, multiple logistic regression and Spearman's correlation tests. P values less than 0.05 were considered statistically significant.
More than half of the first-time donors returned to donate again (n=776, 51.7%) during the 3 years after the first donation. The mean number of donations in the whole 3-year period was 0.69±0.49, while it was 1.33±0.62 (median 1) in the first year, 0.4±0.7 (median 0) in the second, and 0.3±0.65 (median 0) in the third year. The return rate was directly correlated with the number of donations in the first year (r=0.74, P<0.001). The return rate increased as the interval between the first and second donations decreased (P<0.05, OR=1.03). The return rate was higher for male donors and single donors (P<0.05), but was not related to age or educational level (P>0.05).
In this study 51.7% of first-time donors returned to donate again, a high figure indicating the success of our recruitment strategy. Understanding the importance of the number of donations in the first year for donors' return rate and planning recruitment programs and more effective measures to encourage donors in the first year may help to increase return rates.
本研究旨在确定初次献血者的返还率、首年献血次数与献血者人口统计学特征之间的关系。
从设拉子输血中心（伊朗）的 1500 名志愿初次献血者的献血者数据库中获得数据。获得献血者的人口统计学特征（性别、年龄、教育程度）和献血史，为期 3 年，并记录首年的献血次数和一年内首次献血与下一次献血之间的间隔。我们在 3 年内，寻找返还率与人口统计学特征和首年、次年和第三年的献血次数之间的相关性。使用卡方检验、多因素逻辑回归和斯皮尔曼相关检验对数据进行分析。P 值小于 0.05 被认为具有统计学意义。
超过一半的初次献血者在首次献血后 3 年内再次返回献血（n=776，51.7%）。整个 3 年期间的平均献血次数为 0.69±0.49，首年为 1.33±0.62（中位数 1），次年为 0.4±0.7（中位数 0），第三年为 0.3±0.65（中位数 0）。返还率与首年的献血次数直接相关（r=0.74，P<0.001）。随着首次和第二次献血之间的间隔缩短，返还率增加（P<0.05，OR=1.03）。男性和单身献血者的返还率较高（P<0.05），但与年龄或教育程度无关（P>0.05）。
在这项研究中，51.7%的初次献血者再次返回献血，这一高比例表明我们的招募策略取得了成功。了解首年献血次数对献血者返还率的重要性，并制定招募计划和更有效的措施鼓励献血者在首年献血，可能有助于提高返还率。
