Table 4

Generalised estimating equation of panel data of perinatal outcomes (LBW and IM) 2005–2015

Model 1
(crude)
Model 2
(adjusted by CAPB)
Model 3 interactions
(time period*CAPB)
Coef.P valuesCoef.P valuesCoef.P values
LBW
Independent variables
Time period
  2008–20100.04NS0.04NS−0.05NS
  2012–20150.05NS0.05NS−0.16NS
CAPB0.80.0090.70.02
Interaction terms
  CAPB*2008–20100.11NS
  CAPB*2012–20150.250.004
 Constant6.23 <0.0015.51 <0.0015.27 <0.001
IM
Independent variables
Time period
  2008–2010−0.256 <0.001−0.25 <0.001−0.250.002
  2012–2015−0.46 <0.001−0.32 <0.001−0.55 <0.001
CAPB−0.03NS−0.0028NS
Interaction terms
  CAPB*2008–2010−0.002NS
  CAPB*2012–20150.10NS
 Constant3.53 <0.0013.50 <0.0013.53 <0.001
  • Reference category: years 2005–2007.

  • CAPB, cyclically adjusted primary balance; IM, infant mortality; LBW, low birth weight.