TABLE 3

Meta-regression Results of Trials of the Association Between Breastfeeding Interventions and Breastfeeding Outcomes by Potentially Influential Intervention Characteristics

Study CharacteristicInitiation1–3 Months4–6 Months
Study nPRD (95% CI)Study nPRD (95% CI)Study nPRD (95% CI)
Any breastfeeding, overall12<.0010.09 (0.04 to 0.14)14.030.10 (0.04 to 0.15)8.0370.08 (0.01 to 0.15)
 Timing of intervention
  Prenatal and postpartum10<.0010.09 (0.03 to 0.15)10.960.13 (0.08 to 0.18)7.410.10 (0.04 to 0.15)
  Postpartum2.020.12 (−0.03 to 0.26)2.56−0.02 (−0.07 to 0.04)1−0.09 (−0.25 to 0.06)
  Prenatal02.50.16 (−0.21 to 0.52)0
 Intervention intensity
  >6 contacts6.050.06 (−0.01 to 0.14)6.080.11 (0.04 to 0.18)5.010.07 (−0.03 to 0.17)
  3–6 contacts5.0040.14 (0.05 to 0.23)5.930.12 (0.04 to 0.20)3.560.11 (−0.03 to 0.24)
  1–2 contacts10.04 (−0.12 to 0.20)3.50.00 (−0.10 to 0.10)0
 Provider
  Medical provider5.110.06 (−0.02 to 0.14)6.130.06 (−0.03 to 0.15)4.050.04 (−0.06 to 0.14)
  IBCLC3.030.16 (0.05 to 0.27)4.840.14 (0.04 to 0.25)3.650.16 (0.03 to 0.29)
  Lay provider4.020.07 (−0.02 to 0.16)4.100.13 (−0.09 to 0.35)10.05 (−0.10 to 0.21)
Exclusive breastfeeding, overall10.0030.04 (0.00 to 0.08)8.390.01 (−0.01 to 0.02)
 Timing of intervention
  Prenatal and postpartum8.010.05 (−0.01 to 0.11)6.740.00 (−0.02 to 0.02)
  Postpartum2.030.01 (−0.12 to 0.13)2.040.01 (−0.04 to 0.07)
  Prenatal00
 Intervention intensity
  >6 contacts5.0010.05 (−0.04 to 0.14)4.270.01 (−0.02 to 0.03)
  3–6 contacts4.330.03 (−0.07 to 0.12)3.490.00 (−0.03 to 0.03)
  1–2 contacts10.06 (−0.12 to 0.25)10.03 (−0.03 to 0.09)
 Provider
  Medical provider4.020.03 (−0.06 to 0.13)5.300.01 (−0.02 to 0.03)
  IBCLC3.190.03 (−0.09 to 0.15)2.32−0.01 (−0.05 to 0.03)
  Lay provider3.0040.07 (−0.05 to 0.18)10.02 (−0.03 to 0.07)