Table 1

Spearman rank-order correlations by author position by specialty

SpecialtyOverall authorshipFirst authorshipLast authorship
RP valueRP valueRP value
Anaesthesiology0.340.280.220.480.410.18
Cross-specialty0.840.0010.95<0.0010.96<0.001
Dermatology0.92<0.0010.800.0030.87<0.001
Internal medicine0.780.0040.800.0030.87<0.001
Neurology0.96<0.0010.670.020.94<0.001
Obstetrics and gynaecology−0.570.06−0.570.06−0.170.59
Oncology0.620.030.650.030.430.16
Paediatrics0.730.010.630.030.800.003
Psychiatry0.730.010.660.020.490.11
Radiology−0.090.78−0.340.28−0.240.46