Differences between RhD positive and RhD negative participants in specialised medical doctors the subject had to regularly visit at least once in the past two years.

Columns 2–5 show numbers of RhD- or RhD+ subjects that had to (V+) and had not to (V-) visit a doctor of particular specialisation within the past 2 years. Columns 6 and 7 show Tau and P computed with partial Kendall´s correlation between two binary variables, i.e. the RhD phenotype and the Visiting doctor, controlled for the confounding variable age of a subject. Positivity of Tau indicates that RhD negative subjects have had to more frequently visit a doctor of particular specialization. Significant results (P P Differences between RhD positive and RhD negative participants in specialised medical doctors the subject had to regularly visit at least once in the past two years.