title: A randomized trial of nurse intervention to reduce preterm and low birth weight births.
abstract: OBJECTIVE
  To test the effect of telephone calls from registered nurses to low-income pregnant women on the rates of low birth weight (LBW) and preterm births.
  
  
  METHODS
  A total of 1554 women receiving prenatal care in a public clinic who met study criteria and who consented were assigned randomly to intervention and control groups. Women in the intervention group received telephone calls from a registered nurse, one or two times weekly from 24 weeks' through 37 weeks' gestation. Relative risks (RRs) and 95% confidence intervals (CIs) were calculated.
  
  
  RESULTS
  Low birth weight rates were 10.9% in the intervention group and 14.0% in the control group (RR 0.75; 95% CI 0.55, 1.03; P = .072). For gestational age less than 37 weeks, rates were 9.7 in the intervention group and 11.0 in the control group (RR .87; 95% CI 0.62, 1.22; P = .415). In the subgroup of low-income black women 19 years of age and older, a statistically significant difference was found in preterm birth rates before 37 weeks (8.7% in the intervention group versus 15.4% in the controls [RR 0.56; 95% CI 0.38, 0.84; P = .004]).
  
  
  CONCLUSIONS
  There was no difference in LBW or preterm births between intervention and control groups in the total sample. In a secondary analysis of black subjects 19 years of age and older, there was a significant difference in preterm birth rates.
authors.affiliation: Department of Obstetrics and Gynecology, Wake Forest University School of Medicine, Winston-Salem, North Carolina 27157-1066, USA. mmoore@bgsm.edu
authors.forename: M L
authors.initials: ML
authors.lastname: Moore
authors.forename: P J
authors.initials: PJ
authors.lastname: Meis
authors.forename: J M
authors.initials: JM
authors.lastname: Ernest
authors.forename: H B
authors.initials: HB
authors.lastname: Wells
authors.forename: D J
authors.initials: DJ
authors.lastname: Zaccaro
authors.forename: T
authors.initials: T
authors.lastname: Terrell
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D005865:Gestational Age; D006801:Humans; D007230:Infant, Low Birth Weight; D008423:Maternal Age; D009723:Nurse-Patient Relations; D007752:Obstetric Labor, Premature / Q000451:nursing* / Q000517:prevention & control; D011203:Poverty; D011247:Pregnancy; D011295:Prenatal Care; D044469:Racial Groups; D013689:Telephone