Table 1

Correlations in the UCLMS Cohort study a,b,c,d
Mean GCSE gradee Best three A-levelse First year Second year Third year Fourth year Fifth year MRCP(UK) Part 1 MRCP(UK) Part 2 MRCP(UK) PACES
Continuous censored Continuous censored Continuous Continuous Continuous Continuous Continuous Continuous Continuous Continuous
Mean GCSE grade 1 0.501 0.128 0.162 0.199 0.263 0.249 0.139 0.265 0.137
P<0.001 P = 0.003 P<0.001 P<0.001 P<0.001 P<0.001 P = 0.046 P = 0.008 P = 0.331
n = 589 n = 548 n = 547 n = 598 n = 590 n = 583 n = 207 n = 100 n = 52
Best three A-levels 0.561 ± 0.032(0.501 to 0.621) 1 0.279 0.250 0.180 0.272 0.279 0.215 0.299 0.058
P<0.001 P<0.001 P<0.001 P<0.001 P<0.001 P = 0.001 P = 0.001 P = 0.676
n = 571 n = 570 n = 668 n = 660 n = 652 n = 232 n = 112 n = 55
First year total 0.136 ± 0.042(0.054 to 0.214) 0.408 ± 0.039(0.337 to 0.482) 1 0.752 0.502 0.522 0.550 0.559 0.497 0.156
P<0.001 P<0.001 P<0.001 P<0.001 P<0.001 P<0.001 P = 0.307
n = 619 n = 618 n = 608 n = 601 n = 204 n = 94 n = 45
Second year total

0.171 ± 0.052

(0.065 to 0.252)

0.328 ± 0.039

(0.250 to 0.408)

* 1 0.523 0.590 0.583 0.595 0.501 0.273
P<0.001 P<0.001 P<0.001 P<0.001 P<0.001 P = 0.070
n = 618 n = 608 n = 601 n = 204 n = 94 n = 45
Third year total

0.213 ± 0.046

(0.118 to 0.294)

0.265 ± 0.038

(0.186 to 0.337)

* * 1 0.733 0.690 0.522 0.469 0.461
P<0.001 P<0.001 P<0.001 P<0.001 P<0.001
n = 608 n = 703 n = 252 n = 122 n = 59
Fourth year total

0.285 ± 0.039

(0.202 to 0.362)

0.350 ± 0.038

(0.276 to 0.418)

* * * 1 0.831 0.665 0.660 0.535
P<0.001 P<0.001 P<0.001 P<0.001
n = 703 n = 252 n = 122 n = 59
Fifth year total

0.265 ± 0.038

(0.194 to 0.349)

0.357 ± 0.033

(0.292 to 0.415)

* * * * 1 0.715 0.673 0.484
P<0.001 P<0.001 P<0.001
n = 251 n = 122 n = 59
MRCP(UK) Part 1

0.23 9 ± 0.085

(0.063 to 0.397)

0.346 ± 0.088

(0.177 to 0.514)

* * * * * 1 0.775 0.429
P<0.001 P = 0.001
n = 122 n = 59
MRCP(UK) Part 2

0.358 ± 0.123

(0.094 to 0.592)

0.548 ± 0.111

(0.297 to 0.741)

* * * * * * 1 0.410
P = 0.001
n = 58
MRCP(UK) PACES

0.005 ± 0.177

(-0.335 to 0.399)

0.140 ± 0.186

(0.221 to 0.495)

* * * * * * * 1

Abbreviations: A-level, Advanced level; GCSE, General Certificate of Secondary Education; MCMC, Markov Chain Monte Carlo; MRCP(UK), Membership of the Royal College of Physicians of the United Kingdom; PACES, Practical Assessment of Clinical Examination Skills; UCLMS, University College London Medical School.

aCorrelations in entrants to medical school between measures of academic and professional attainment in the UCLMS Cohort Study.

bCorrelations above the diagonal are simple Pearson correlations and have different values of n for various reasons.

cCorrelations shown in bold are significant at P<0.05.

dCorrelations in the lower triangle involving censored variables were corrected for censoring using an MCMC method, with 95% confidence intervals calculated from the final 2000 MCMC steps in a chain of 5000.

eValues in these two columns are mean ± SE (95% CI) unless otherwise stated.

*Indicates correlations below the diagonal, which are based on two non-censored, continuous variables and therefore identical to those above the diagonal.

McManus et al.

McManus et al. BMC Medicine 2013 11:242   doi:10.1186/1741-7015-11-242

Open Data