Table 3. Linear Regression Models Presenting the Association of AFB With FRSs, Progressively Adjusting for Childhood and Adulthood Socioeconomic Risk Covariates
VariableAge and Site Only (Model 1)Age, Site, and Childhood Adversities (Model 2)Age, Site, Childhood Adversities, Education, and Income (Model 3)
(N=905)(N=904)(N=892)
Categories of AFB, y
<20RefRefRef
20–24−3.15−5.26−1.03−3.14−5.26−1.01−2.92−5.09−0.76
25–29−5.64−8.19−3.10−5.63−8.19−3.07−5.29−7.93−2.65
≥30−3.91−6.84−0.99−3.90−6.84−0.96−3.12−6.15−0.08
Nulliparous−6.67−9.55−3.79−6.65−9.55−3.75−6.19−9.15−3.23
Age (centered), y0.890.621.160.890.621.160.890.611.16
Research site
Kingston (Ontario, Canada) (ref)RefRefRef
Saint‐Hyacinthe (Quebec, Canada)1.44−0.993.871.42−1.023.861.74−0.834.32
Tirana (Albania)13.5311.0915.9813.5711.0916.0614.0911.5316.64
Manizales (Colombia)2.760.315.202.760.315.212.900.295.51
Natal (Brazil)8.696.1611.218.726.1611.299.376.7012.03
Childhood economic adversity (no=ref)−0.19−1.811.42−0.34−1.981.31
Childhood social adversity (no=ref)0.20−1.612.010.12−1.701.95
Education site specific
Low (ref)Ref
Medium−0.30−2.141.53
High−2.40−4.48−0.33
Income
Poor (ref)Ref
Middle−1.76−3.640.12
High0.09−2.342.52
Constant17.6117.6218.60
  • Data are given as B (95% confidence interval). AFB indicates age at first childbirth; FRS, Framingham Risk Score; and Ref, reference.