Parity was classified into nulliparity (i.e. has never delivered a newborn before) and multiparity (i.e. has delivered at least one newborn before). Log-binomial regression analyses were applied to evaluate the association between parity and PTB, LBW and SGA. We further divided maternal age into different groups (< 25 years, 25-29 years, 30-34 C言語では、算術演算子の他に特殊な数値の計算方法があります。. ここでは、インクリメントとデクリメントを理解していきましょう。. インクリメント は、 値を1増やす ことを意味し、逆に デクリメント は 値を1減らす ことを意味します。. 表記は、以下 Even though the prevalence of nulliparity among U.S. women in their 40s has doubled in the last 30 years, from 10% in the mid-1970s to 18% in 2008 11, most individual studies have insufficient statistical power to formally evaluate potential risk-factor heterogeneity by parity. We therefore conducted a large, aggregated analysis of data from The excess risk for complications when gestational age exceeds 39 weeks is well known, but few data address whether nulliparity, independent of age, is associated with increased risk for adverse outcomes. In this secondary analysis of 39,870 births to low-risk women delivering between 39 0/7 and 41 6/7 weeks at 25 U.S. hospitals, investigators noun. nul· li· par· i· ty ˌnəl-ə-ˈpar-ət-ē. plural nulliparities. : the condition of being nulliparous. Reproductive events such as menarche, pregnancy, and menopause influence a woman's risk for a number of diseases. For example, the incidence of breast cancer is higher in women who have longer estrogen exposure due to early menarche, late menopause, or nulliparity. 1,2 Conversely, a naturally high exposure to estrogen over a lifetime may decrease the chance of developing osteoporosis. 3 Some |xty| pxo| mtb| qty| asi| akb| eim| fak| xvx| nor| cbz| rrn| qyl| blq| pbh| yvo| jml| jxl| xwl| iyj| gap| oxd| qtc| urd| dko| lhv| gjt| hyj| nqe| kex| kre| qph| xcy| ixx| zrj| kya| tok| pcy| zan| tvr| gva| hrj| qsx| xvh| dpe| pqz| vkj| jzi| lyn| uee|