The difference in mean parity in the adolescents group compared to the adults group (1.90 ± 0.30 versus 2.08 ± 0.37, p < 0.001) could be explained by the fact that 76.5% of our teenage parturients were primigravida.
The difference in the comparable two parity values, which are computed in different ways, is called the syndrome; the syndrome sequence is a stream of zero or near zero values.
The results are shown in Table 2. Birth weight of neonates born after frozen-thawed ET was significantly higher than the birth weight of neonates born after fresh ET. Since the difference in parity between the groups could have an influence on the difference in birth weight, we performed a multivariate analysis of parity and gestational weight.
The most notable difference in the effect of parity on medullary compared with all other subtypes examined here was statistically significant and as far as we are aware, no previous study has reported such a difference.
We found no difference in the effect of parity on mortality in women with a relatively early first delivery (aged 22 or less) and women who were older when they had their first child.
Although our findings show clearly that age at first birth has a stronger effect on lobular than ductal cancer, they do not suggest a corresponding difference in the effect of parity on these two subtypes.
45% of the difference in completed parity between White and Hispanic women was due to higher intentions among Hispanic women, 48% was due to the fact that Hispanic women are more likely to overshoot intentions, and only 7% was due to the fact that Hispanic women are less likely to undershoot intentions.
Among men, a larger fraction of the difference in completed parity between Whites and Hispanics was due to higher intentions (53%), while 39% was due to the fact that Hispanic men were more likely to overshoot intentions, and 8% was due to the fact that Hispanic men were less likely to undershoot intentions.
First, if there is a difference in parity between the short-spaced and regular-spaced births, it could confound the effect of short birth spacing with the association of mortality and parity.
This difference can partly be explained due to difference in parity between the two groups (intracervical of median 2 versus intravaginal of median 1).
