Validation of maternal self-report in retrospective studies

Feeding at the Breast and Expressed Milk Feeding: Associations with Otitis Media and Diarrhea in Infants

OBJECTIVE

To examine the associations of substance fed and mode of breast milk delivery with occurrence of otitis media and diarrhea in the first year of life.

STUDY DESIGN

At 12 months postpartum, women (n = 813; 62% response) completed a questionnaire that assessed sociodemographics, infant occurrence of otitis media and diarrhea, and the timing of starting/stopping feeding at the breast, expressed milk, and formula. Women who intended to "bottle feed" exclusively were not recruited. Logistic and negative binomial regressions were conducted in the full sample (n = 491) and no-formula (n = 106) and bottle-only (n = 49) subsamples.

RESULTS

Longer duration of expressed milk feeding was associated with increased odds of experiencing otitis media (6-month OR [OR6-month] 2.15, 95% CI 1.01-4.55) in the no-formula subsample. Longer durations of breast milk feeding (OR6-month 0.70, 95% CI 0.54-0.92; 6-month incidence rate ratio [IRR6-month] 0.74, 95% CI 0.63-0.91), and feeding at the breast (OR6-month 0.70, 95% CI 0.54-0.89; IRR6-month 0.74, 95% CI 0.63-0.88) were associated with less diarrhea, and longer formula feeding duration was associated with increased risk of diarrhea (IRR6-month 1.34, 95% CI 1.13-1.54) in the full sample.

CONCLUSION

Substance fed and mode of breast milk delivery have different contributions to infant health depending on the health outcome of interest. Feeding at the breast may be advantageous compared with expressed milk feeding for reducing the risk of otitis media, and breast milk feeding compared with formula may reduce the risk of diarrhea.

The influence of geographic isolation on late preterm infant and mother outcomes

PURPOSE

Risk of adverse outcome in late-preterm infants (born between 34 and 36 weeks and 6 days' gestation) is heightened for those living in geographic isolation (GI). We examined the relationships between GI and several mother and infant outcomes.

SUBJECTS AND DESIGN

This was a tricenter cross-sectional study of 38 English-speaking late-preterm infant/mother dyads admitted to neonatal intensive care in a predominately rural Midwestern state. Eligibility for the study included English-speaking mothers and their biologically born late-preterm infants with no known anomalies. METHODS AND MAIN OUTCOME: Outcomes included maternal knowledge of infant development (Knowledge of Infant Development Inventory) and competence (Competence in Preterm Infant Care questionnaire), maternal perception of vulnerability (Vulnerable Baby Scale ([VBS]), risk, and temperament (Pictorial Assessment of Temperament ([PAT]). Infant readmission and follow-up data were also examined. Potential covariates included any use of the Internet for healthcare information, demographic data, and mother and infant health history and were obtained from medical records and from the mother. Level of GI was determined by time and distance traveled (minutes) from the mother's primary residence to the closest regional healthcare center.

RESULTS

Study participants traveled 61 ± 58 miles and 72 ± 62 minutes on average. The Mean ± SD scores on assessment were as follows: Knowledge of Infant Development Inventory 77 ± 10, and Competence in Preterm Infant Care questionnaire 90 ± 14, VBS 27.5 ± 3.5, and PAT 17.5 ± 3. Bivariate associations were observed between distance and time and VBS scores (P = .03 for both). Multiple regression analysis showed significant relationship between time (P = .02) and PAT scores when maternal education (0.09) and the number of hours spent in the NICU (P = .01) were entered into the model. The association between time traveled and VBS scores became marginally significant when maternal age and Internet use were entered into the regression models. The odds for a mother to perceive her infant at risk for suboptimal outcomes were 6 times greater for each 1-hour additional travel time (odds ratio = 6.0; 95% confidence interval: 1.3-36; P = .001). There was no association between GI and readmission rate and follow-up care. Readmission rate was 8%, and anticipatory guidance was found to be inadequate.

CONCLUSION

Remote access to appropriate healthcare services elicits more than legitimate concerns for the late preterm infant and warrants further investigation with consideration for how services might be more easily accessed for this at-risk group.

Maternal recall of birthweight and birth size in Entebbe, Uganda

OBJECTIVES

To assess the reliability of maternally recalled birthweight and size in Entebbe, Uganda.

METHODS

The study population comprised 404 mothers, who were participants in the Entebbe Mother and Baby Study (EMaBS). Mothers were recruited to EMaBS during antenatal care, maternal characteristics were recorded during pregnancy, and birthweight was recorded at delivery. Four to seven years after delivery, mothers were asked to recall the child's birthweight and size. Their responses were compared with the birthweight recorded in the EMaBS database.

RESULTS

Of 404 interviewed mothers, 303 (75%) were able to give an estimate of birthweight and for 265 of these EMaBS data on recorded birthweights were available. Women who were educated and whose children had low birth order were more likely to be able to give an estimate: 37 (14%) recalled the exact recorded birthweight; a further 52 (20%) were accurate to within 0.1 kg of the recorded weight. On average, mothers overestimated birthweight by 0.06 kg (95% CI: 0.00-0.13 kg, P = 0.04). Recalled and recorded birthweights showed moderate agreement with an intraclass correlation coefficient of 0.64. Four hundered mothers gave an estimate of birth size: the sensitivity and specificity of recalled birth size for classifying low birthweight were 76% (95% CI: 50-93%) and 70% (95% CI: 65-75%), respectively.

CONCLUSIONS

Mothers' recall of birthweight was not precise but in absence of other data, recall of birthweight and size may have some value in epidemiological studies in these settings.