ABSTRACT
This chapter discusses the relationship between IQ and number of prenatal visits in each of the race-sex groups. When the mothers registered for prenatal care, the examining physician made an estimate of the nearest week of gestation, based on the reported number of days since the first day of the last menstrual period. Anemia during pregnancy was diagnosed in 9" of the white women and 34" of the Negro women. The hematocrit is the percentage of red blood cells by volume in a blood sample. Hemoblogin is an oxygen-transporting protein present in red blood cells. The hemoglobin level is approximately one-third the value of the hematocrit. During each prenatal examination the mother was weighed. The maximum weight gain was the difference between the highest of these values and reported prepregnant weight. During the prenatal examinations, kidney, ureter, or bladder (KUB) infections were diagnosed in 10" of the white women and 19" of the Negro women.
