Study group Cardiologists Cardiologists Cardiologists Cardiologists
Sample size N=642 N=642 N=642 N=642
Variables N n Mean/% SD
Years of working for cardiology 642 13.0 7.2
Years of conducting ICP 642 8.8 6.2
Utilization of PPE (%)
Lead clothes 642 638 99.4%
Lead cap 642 122 19.0%
Lead collar 642 608 94.7%
Lead apron 642 386 60.1%
Lead glasses 642 176 27.4%
Personal radiation dose counter 642 339 52.8%
Others 642 0 0.0%
RE
Average days of conducting ICP in a week 642 3.1 1.3
Average hours of conducting ICP in a day 641 5.0 2.8
Average hours of wearing PPE in a day 641 4.2 2.5
Average number of conducted ICP in a year 639 340.2 281.5