You will be provided with the titles and abstracts of a collection of medical RCT reports studying a clinical question -- for instance, the efficacy of an intervention on some medical outcome. Please write a few sentences synthesizing the findings of these reports, which could serve as a conclusion section for a systematic review article. Your response should not include any other text. The RCT reports are below.



Title 1:
Transitioning preterm infants with nasogastric tube supplementation: increased likelihood of breastfeeding.
Abstract 1:
To compare nasogastric tube and bottle supplementation as two means of transitioning preterm infants to breastfeeding within an established breastfeeding support program.
                Prospective, randomized controlled trial; mothers and health care providers, who were not blinded.
                Metropolitan private regional perinatal center; 40-bed intensive-care nursery.
                Eighty-four preterm breastfed infants whose birth weight was 1,000-2,500 g.
                Rates of exclusive and partial breastfeeding at discharge from the intensive-care nursery, and at 3 days, 3 months, and 6 months after discharge.
                Compared with infants receiving bottle supplements, infants receiving nasogastric tube supplements were more likely to be breastfeeding at discharge and at 3 days, 3 months and 6 months, after adjusting for confounding variables. Odds ratios (confidence intervals = 95%) showed that the group receiving nasogastric supplements was 4.5 times (1.4 to 15) more likely to be breastfed at discharge and 9.4 times more likely to be fully breastfed (3.1 to 28.4). There were significantly fewer apnea and bradycardia episodes in the group receiving nasogastric supplements, although they had more episodes that required stimulation for resolution. Groups were not different with respect to length of hospitalization and infant weight at discharge.
                Using nasogastric tube supplementation during transition to oral feedings increases the likelihood of breastfeeding at discharge, 3 days, 3 months, and 6 months. This intervention requires a program with skilled personnel and an environment that allows the mother and infant to be in close physical proximity. Further study should investigate differences in the effects on maternal confidence, imprinting, and suck mechanism when preterm infants are bottle fed and breastfed.


Title 2:
Cup or bottle for preterm infants: effects on oxygen saturation, weight gain, and breastfeeding.
Abstract 2:
The impact of cup-feeding or bottle-feeding on weight gain, oxygen saturation, and breastfeeding rates of preterm infants was studied in 34 bottle-fed and 44 cup-fed preterm infants. At initiation of oral feeding, postconceptional age and weight were 37.2 +/- 2.2 weeks and 1676 +/- 83 g for the bottle-fed group (BF) and 37.0 +/- 1.6 weeks and 1637 +/- 40 g for the cup-fed (CF) group, respectively. No significant differences between groups were found with regard to time spent feeding, feeding problems, weight gain, or breastfeeding prevalence at discharge or at 3-month follow-up. Possible beneficial effects of cup-feeding were lower incidence of desaturation episodes (13.6% vs 35.3%, CF vs BF, P = .024) and a higher prevalence of breastfeeding at 3 months among those still breastfeeding at the first follow-up visit (68.4% vs 33.3%, CF vs BF, P = .04).


Title 3:
A pilot study to assess the viability of a randomised controlled trial of methods of supplementary feeding of breast-fed pre-term babies.
Abstract 3:
to compare the impact of two methods of supplementary feeding of pre-term babies (bottle vs cup) on subsequent breast feeding and to assess the feasibility of using a randomised controlled trial (RCT) to investigate the topic.
                small scale prospective RCT. Data on breast feeding, as defined as the exclusive method of feeding, were collected. A range of relevant bio-data was also collected and their impact on breast feeding assessed.
                a special care baby unit in a District General Hospital in the UK.
                over a three-month period, all pre-term babies (32-37 weeks' gestation) who fulfilled the inclusion criteria and has been born to mothers who had expressed a pre-partum desire to breast feed, who had consented to take part, were included (n=14).
                the eligible babies were randomly allocated to supplementary feeding of breast milk, via either a cup or a bottle. Whether or not the baby was being breast fed at discharge was noted.
                the study suggested that this RCT framework is a viable method of investigating baby feeding. Because of the small-scale nature of the project, the actual database must be treated with extreme caution. No significant differences were found between the two groups in terms of breast feeding. However, the mothers reported high levels of support and also the breast-feeding rates were above the national averages. These two findings could have contributed to the non-significant results observed in this analysis.
                if the present findings could be supported by further research, then the non-significant results relating method of supplementary feeds to subsequent breast feeding could be explained by reference to three factors. Firstly, there is, in fact, no real effect of method of supplementary feeding and subsequent breast feeding; secondly, the method adopted differed from existing research and thus may be expected to produce non-corroborative results; and finally, the overall levels of breast feeding within the Unit generally were higher than the national average. The relevance of the RCT for investigating this subject is also discussed with reference to the present data set. Further experimental work to develop these ideas and to identify causal links is required.
                Copyright 2001 Harcourt Publishers Ltd.


Title 4:
Effect of bottles, cups, and dummies on breast feeding in preterm infants: a randomised controlled trial.
Abstract 4:
To determine the effect of artificial teats (bottle and dummy) and cups on breast feeding in preterm infants.
                Randomised controlled trial.
                Two large tertiary hospitals, 54 peripheral hospitals.
                319 preterm infants (born at 23-33 weeks' gestation) randomly assigned to one of four groups: cup/no dummy (n = 89), cup/dummy (n = 72), bottle/no dummy (n = 73), bottle/dummy (n = 85). Women with singleton or twin infants < 34 weeks' gestation who wanted to breastfeed were eligible to participate.
                Cup or bottle feeding occurred when the mother was unable to be present to breast feed. Infants randomised to the dummy groups received a dummy on entry into the trial.
                Full breast feeding (compared with partial and none) and any breast feeding (compared with none) on discharge home. Secondary outcomes: prevalence of breast feeding at three and six months after discharge and length of hospital stay.
                303 infants (and 278 mothers) were included in the intention to treat analysis. There were no significant differences for any of the study outcomes according to use of a dummy. Infants randomised to cup feeds were more likely to be fully breast fed on discharge home (odds ratio 1.73, 95% confidence interval 1.04 to 2.88, P = 0.03), but had a longer length of stay (hazard ratio 0.71, 0.55 to 0.92, P = 0.01).
                Dummies do not affect breast feeding in preterm infants. Cup feeding significantly increases the likelihood that the baby will be fully breast fed at discharge home, but has no effect on any breast feeding and increases the length of hospital stay.
Supplementing breast feeds by cup confers no breastfeeding benefit beyond discharge home and delays discharge considerably. There is currently insufficient evidence on which to base recommendations for a tube alone approach to supplementing breast feeds. Further research is needed to evaluate a tube alone approach.