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Table 2 Breastfeeding incidence

From: Seasonal differences in breastfeeding in the United States: a secondary analysis of longitudinal survey data

 

All

Male

Female

Intercept

− 0.08281 (0.10016)

−0.04778 (0.13778)

− 0.17597 (0.14558)

Sex

 Male

−0.029919** (0.01332)

  

Season of birth

 Summer

−0.00638 (0.01862)

0.01771 (0.02630)

−0.02615 (0.02648)

 Fall

0.01486 (0.01911)

0.04673 (0.02697)

−0.01134 (0.02722)

 Winter

0.02413 (0.01904)

0.05898** (0.02663)

−0.00299 (0.02742)

Race/ethnicity

 Black

−0.15778*** (0.01900)

−0.15603*** (0.02694)

− 0.15872*** (0.02693)

 Hispanic

0.02463 (0.01911)

−0.01687 (0.02655)

0.07047*** (0.02766)

Education level

 High school

0.06315*** (0.02426)

0.07253** (0.03362)

0.06075 (0.03516)

 Associate

0.08972*** (0.03024)

0.09373** (0.04192)

0.09388** (0.04389)

 College

0.17706*** (0.03251)

0.18069*** (0.04528)

0.17989*** (0.04689)

 Graduate school

0.12838*** (0.03814)

0.15141*** (0.05341)

0.12364** (0.05490)

 Other degree

0.09544*** (0.03423)

0.12936*** (0.04638)

0.06717 (0.05106)

Test score

 ASVAB math

0.00002909*** (0.00000329)

0.00003529*** (0.00000459)

0.00002312*** (0.00000473)

Mother’s lifestyle factors at the birth of the child

 Hours worked for pay

−0.00001909** (0.00000826)

− 0.00002505** (0.00001141)

− 0.00001659 (0.00001203)

 Income

−2.07899E−9 (8.716857E-8)

6.977359E-8 (1.135965E-7)

-9.3693E-8 (1.36012E-7)

 Married at birth

0.12916*** (0.01767)

0.11193*** (0.02487)

0.14640*** (0.02525)

 Age of Mother at first birth at first birth

0.01277*** (0.00228)

0.00834*** (0.00317)

0.01748*** (0.00328)

Age of mother at birth

 10–19

−0.14574*** (0.03765)

−0.16846*** (0.05308)

− 0.11983** (0.05354)

 20–29

−0.06302*** (0.02413)

− 0.07647** (0.03413)

−0.04370 (0.03420)

Birth order of the child

 Firstborn

0.06680*** (0.02162)

0.11528*** (0.03044)

0.01390 (0.03081)

 Youngest

−0.01997 (0.02065)

− 0.02675 (0.02883)

− 0.01227 (0.02971)

Projected number of children

 Ideal family size desired as a teen

0.01716*** (0.00455)

0.02229*** (0.00642)

0.01155 (0.00648)

Number of kids ever born

 Two children

0.04167** (0.03234)

0.08329 (0.04556)

0.00623 (0.04615)

 Three children

0.08172*** (0.03743)

0.11874** (0.05245)

0.05382 (0.05367)

 Four children

0.12557*** (0.04236)

0.16888*** (0.05927)

0.08925 (0.06083)

 5+ children

0.12147*** (0.04670)

0.16233*** (0.06572)

0.08668 (0.06662)

Decade of child’s birth

 1970’s

−0.01661 (0.06130)

−0.11029 (0.08628)

0.07577 (0.08751)

 1980’s

−0.01837 (0.05019)

−0.07025 (0.07039)

0.03615 (0.07188)

 1990’s

−0.00959 (0.04550)

−0.06460 (0.06390)

0.04888 (0.06502)

Regression statistics

 Adjusted R2

0.2240

0.2330

0.2174

 n

4400

2251

2149

  1. Standard errors from ordinary least squares estimations are in parentheses
  2. ***Significantly different from 0 at the 99% level, and ** at the 95% level