Table 3

Overall and round-specific retention of knowledge among participants who answered the questions initially (rounds 1 or 2) and on retest (round 3)

Number of players (answer pairs)Initial per cent correctMean (SD)Subsequent per cent correctMean (SD)Mean change (95% CI)p Value*
Overall50 (1046)40.5 (20.1)52.3 (23.1)11.9 (6.7 to 17.0)<0.001
PGY125 (567)49.6 (18.5)59 (21.6)9.5 (2.3 to 16.7)0.012
PGY218 (309)26 (14.7)41.8 (22.4)15.8 (6.4 to 25.2)0.002
PGY37 (170)45.2 (17.7)55.4 (23.0)10.2 (−7.0 to 27.3)0.197
Round 1; 20 August 2012–13 October 2012
Overall39 (546)37.8 (18.1)47.9 (21.9)10.2 (4.5 to 15.8)<0.001
PGY118 (271)44.1 (15.3)50 (20.2)5.9 (−1.8 to 13.6)0.123
PGY214 (165)25.8 (16.3)40.9 (23.4)15.1 (4.1 to 26.1)0.011
PGY37 (110)45.5 (17.8)56.7 (21.6)11.2 (−6.4 to 28.8)0.170
Round 2; 14 January 2013–26 February 2013
Overall32 (500)46.2 (19.5)63.6 (22.0)17.4 (11.1 to 23.7)<0.001
PGY119 (296)52.2 (18.7)69.3 (20.3)17.1 (7.4 to 26.8)0.002
PGY29 (144)32.9 (14.8)52.8 (20.4)19.9 (8.4 to 31.3)0.004
PGY34 (60)47.9 (22.4)61.3 (29.6)13.4 (−1.3 to 28.0)0.062
  • *Paired t test.

  • PGY, postgraduate year.