The prevalence of low birth weight ( < @ g ) was @ % , @ % , and @ % ( P = @ ) , respectively ; newborn stunting ( length-for-age z score < -@ ) was @ % , @ % , and @ % ( P = @ ) , respectively ; and newborn small head circumference ( head circumference-for-age z score < -@ ) was @ % , @ % , and @ % ( P = @ ) , respectively .