The phrase "average birth age" is correct and usable in written English.
It can be used when discussing the typical age at which individuals give birth within a specific population or demographic.
Example: "The average birth age in this country has been steadily increasing over the past few decades."
Alternatives: "mean age of childbirth" or "typical age of mothers at birth".
To be conservative, we designated a total N = 150 to increase the prospect of statistical significance within a more acute population from our NICU (lower average birth weight and age) and to allow for attrition (including transfer to local level 2 NICUs).
It has been reported that women who used a suppository containing camphor during pregnancy had infants with an increased average birth weight and gestational age [ 28].
The preterm infants in the three city cohorts had similar average birth weights and gestational ages (Table 1).
On average, birth weight increased with maternal age, parity, and prepregnancy BMI and was lower among smokers (Table 1).
The average woman gave birth aged 29.4 years, while people's age at the time of divorce was 36.9 years for men and 40.8 years for women.
The average birth weight was 3,331 g, and gestational age was 38.8 weeks.
Tables 2 and 3 show infants' average birth weights based on birth weight category and gestational age classification considered with birth weight.
The average birth weight of these babies was 2884gr, with an average gestational age of 37.3 completed weeks.
The average estimated gestational age (EGA) at birth was 26.3 and 25.2 weeks, with an average birth weight of 888 and 707 grams for Pre and Post-ETROP Groups, respectively.
We will follow a similar analytic approach to estimate live births prior to 34 weeks (by group and with relative risk) and to estimate the average gestational age at birth for live births, for which we will use a linear regression model with an identity link function and GEE to estimate errors.
