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Table 5 Results of the cox proportional hazards regression predicting breastfeeding cessationc

From: Determinants of breastfeeding initiation and cessation among employed mothers: a prospective cohort study

  Analysis of maximum likelihood estimates
Parameter Parameter Estimate SEa Chi-Square P Value Hazard Ratio (95 % CI)
Supervisor Support (Ref. = Somewhat/Strongly Agree) 0.02 0.15 0.02 0.88 1.02 (0.76–1.38)
Coworker Support (Ref. = Somewhat/Strongly Agree) 0.26 0.34 0.59 0.44 1.30 (0.67–2.52)
Prenatal Job Stress 0.01 0.03 0.05 0.83 1.01 (0.95–1.06)
Prenatal Hours Worked per Week −0.04e−3 0.01 0.00 0.99 1.00 (0.99–1.01)
Leave Status (Ref = On Leave from Work)b 0.38 0.13 9.16 <0.01 1.46 (1.14–1.87)
Longest Paid Leave Possible (days) 0.11e−2 0.12e−2 0.76 0.38 1.00 (0.99–1.00)
Type of Work (Ref. = Clerical)      
Professional −0.34 0.12 8.78 <0.01 0.71 (0.56–0.89)
Blue Collar −0.03 0.13 0.06 0.81 0.97 (0.75–1.26)
  1. aStandard Error
  2. bTime-dependent covariate
  3. cModel was adjusted for maternal age, race/ethnicity, marital status, education, household income, delivery hospital, parity, prenatal smoking, prenatal moods, breastfeeding among friends/family, and pre-pregnancy health; alpha <0.05 was used