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. 2013 Aug 27;63(614):e643–e648. doi: 10.3399/bjgp13X671632

Table 1.

Consultations in the year before diagnosis

Consultations Cases, median number (IQR) Controls, median number (IQR) Rank sum test P-value
In the year before the index date 14 (9 to 21), (n = 2732) 8 (4 to 14), (n = 9537) <0.001
In the 6 months before the index date 9 (6 to 14), (n = 2732) 4 (2 to 8), (n = 8614) <0.001

IQR = interquartile range.