Table 4 Parameter estimates for the square root of optimal fetal weight (grams)

β ₀

Intercept

β ₁

$\frac{\text{Time}}{300}$

β ₂

${\left(\frac{\text{Time}}{300}\right)}^2$

β ₃

${\left(\frac{\text{Time}}{300}\right)}^3$

β ₄

${\left(\frac{\text{Time}}{300}\right)}^4$

β ₅

Male

β ₆

Second birth

β ₇

Third birth

β ₈

Fourth birth or more

β ₉

Maternal height -162

β ₁₀

Time (Maternal height – 162)