Impact of age
There have been 23 women at ages between 23 and 35 years, and 37 at ages
between 36 to 45 (table 1). Of the first group, 17 women had successful
births (74 %), six had aborts (26 %), and two women did not get
pregnant (9 %). Of the second group, 27 women gave births (73 %), 11
had aborts (30 %), and four did not get pregnant (11 %) (table 2).
A chi-square test was used to compare age groups and successful
pregnancies under treatment with Anti-D. No expected cell frequencies
were below 5, and the results showed no significant correlation with
χ²(1) = 0·881, p(χ²) = 0·348, p(Fisher’s exact test) = 0·408, V = 0·121.