University of Bergen, Centre for International Health, Bergen, Norway.
Int Breastfeed J. 2010 Feb 4;5(1):2. doi: 10.1186/1746-4358-5-2.
Durations of exclusive breastfeeding (EBF) and predominant breastfeeding (PBF) from two different assessments, among the same mother-infant population, were investigated to determine the degree to which the assessments yielded overlapping results.
Thirty Ugandan mother-infant pairs were followed up weekly from birth to three months of age with weekly short-time feeding recall: the 24-hour recall asked prior to the 1-week recall. In addition, at week 6 and 12 dietary recalls since-birth were conducted. Variables for the duration of EBF and PBF were created from the short-time feeding recalls and the dietary recalls since-birth, respectively. Mean durations of EBF and PBF from the two assessments were compared with Kaplan Meier analysis at week 6 and 12. Reproducibility of dietary recall instruments was also assessed.
At six weeks postpartum the mean durations of EBF were 0.50 weeks (95% CI: 0, 1.02) according to the weekly short-time recalls and 1.51 weeks (95% CI: 0.66, 2.35) according to the recall since-birth (Mantel-Cox test, p = 0.049). The mean durations of PBF were 4.07 weeks (95% CI: 3.38, 4.77) according to the frequent short-time recalls and 4.50 weeks (95% CI: 3.93, 5.07) according to the recall since-birth, (Mantel-Cox-test, p = 0.82). At twelve weeks the mean durations of EBF were 0.5 weeks (95% CI: 0, 1.1) according to the weekly short-time recalls and 1.4 weeks (95% CI: 0.1, 2.7) according to the recall since-birth (Mantel-Cox-test, p = 0.15). The mean durations of PBF were 5.2 weeks (95% CI: 3.9, 6.5) according to the weekly short-time recalls and 6.6 weeks (95% CI: 5.4, 7.8) according to recall since-birth (Mantel-Cox-test, p = 0.20). Reports of feeding categories and early feeding practices showed high reproducibility.
Comparing duration of EBF and PBF in this group of mother-infant pairs showed overlapping results from the weekly short-time assessment and the recall since-birth at twelve weeks, with the latter yielding slightly longer duration of the respective feeding modalities. The retrospective recall since-birth could be assessed as a cost-reducing tool compared to the frequent follow-up addressing duration of respective infant feeding modalities for evaluation of programmes promoting safer infant feeding practices.
The study was part of formative studies for the ongoing study PROMISE EBF registered at http://clinicaltrials.gov, NCT00397150.
在同一母婴人群中，从两种不同评估方法评估纯母乳喂养（EBF）和主要母乳喂养（PBF）的持续时间，以确定评估结果的重叠程度。
30 对乌干达母婴对在出生后至三个月期间每周进行短期喂养回忆：24 小时回忆在一周回忆之前进行。此外，在第 6 周和 12 周进行了出生后饮食回忆。从短期喂养回忆和出生后饮食回忆中分别创建了 EBF 和 PBF 持续时间的变量。使用 Kaplan-Meier 分析比较了两周评估的 EBF 和 PBF 的平均持续时间。还评估了饮食回忆工具的重现性。
产后 6 周时，根据每周短期回忆，EBF 的平均持续时间为 0.50 周（95%CI：0，1.02），根据出生后回忆，EBF 的平均持续时间为 1.51 周（95%CI：0.66，2.35）（Mantel-Cox 检验，p=0.049）。根据频繁的短期回忆，PBF 的平均持续时间为 4.07 周（95%CI：3.38，4.77），根据出生后回忆，PBF 的平均持续时间为 4.50 周（95%CI：3.93，5.07）（Mantel-Cox 检验，p=0.82）。12 周时，根据每周短期回忆，EBF 的平均持续时间为 0.5 周（95%CI：0，1.1），根据出生后回忆，EBF 的平均持续时间为 1.4 周（95%CI：0.1，2.7）（Mantel-Cox 检验，p=0.15）。根据每周短期回忆，PBF 的平均持续时间为 5.2 周（95%CI：3.9，6.5），根据出生后回忆，PBF 的平均持续时间为 6.6 周（95%CI：5.4，7.8）（Mantel-Cox 检验，p=0.20）。报告的喂养类别和早期喂养实践显示出高度的重现性。
在这组母婴对中比较 EBF 和 PBF 的持续时间，在 12 周时，每周短期评估和出生后回忆的结果存在重叠，后者略长于各自的喂养模式。与频繁的随访相比，回顾性的出生后回忆可以作为一种降低成本的工具，用于评估促进更安全婴儿喂养实践的方案，评估各自婴儿喂养模式的持续时间。
该研究是正在进行的 PROMISE EBF 研究的形成性研究的一部分，在 http://clinicaltrials.gov 上注册，NCT00397150。
