Table 4 |
|||||
Correlations in the 1985 Cohort Study^{a,b,c, d,e} | |||||
Mean GCSE/O-level grade | Best three A-levels | BMS outcome | Finals outcome | On Specialist Register | |
Continuous censored | Continuous censored | Ordinal | Continuous | Binary | |
Mean GCSE/O-level grade | 1 | 0.381 | 0.214 | 0.222 | 0.067 |
P<0.001 | P<0.001 | P<0.001 | P = 0.071 | ||
n = 848 | n = 843 | n = 348 | n = 731 | ||
Best three A-levels | 0.390 ± 0.031 (0.327 to 0.446) | 1 | 0.180 | 0.240 | 0.066 |
P<0.001 | P<0.001 | P = 0.075 | |||
n = 848 | n = 347 | n = 733 | |||
BMS outcome | 0.242 ± 0.033 (0.184 to 0.314) | 0.216 ± 0.037 (0.147 to 0.290) | 1 | 0.350 | 0.096 |
P<0.001 | P = 0.009 | ||||
n = 361 | n = 742 | ||||
Finals outcome (London only) | 0.234 ± 0.046 (0.140 to 0.323) | 0.254 ± 0.055) (0.148 to 0.362) | 0.411 ± 0.054 (0.282 to 0.508) | 1 | 0.214 |
P<0.001 | |||||
n = 334 | |||||
On Specialist Register | 0.088 ± 0.045 (0.003 to 0.174) | 0.089 ± 0.042 (0.012 to 0.175) | 0.129 ± 0.051 (0.030 to 0.226) | 0.267 ± 0.062 (0.136 to 0.385) | 1 |
Abbreviations: A-level, Advanced level; BMS, Basic medical sciences; GCSE, General Certificate of Secondary Education; MCMC, Markov Chain Monte Carlo; O-level, Ordinary level.
^{a}Correlations in entrants to medical school between measures of academic and professional attainment attainment in the 1985 Cohort study.
^{b}Correlations above the diagonal are simple Pearson correlations (for example, point-biserials, φ correlations. where a measure is binary or ordinal), and have different n values for various reasons.
^{c}Correlations shown in bold are significant at P<0.05.
^{d}Correlations in the lower triangle were calculated taking account of censoring, and for ordinal values are equivalent to tetrachoric/polychoric correlations.
^{e}Values are mean ± SD (95% CI) unless otherwise stated, and the 95% confidence intervals are the result of the final 2000 MCMC steps in a chain of 5000.
McManus et al.
McManus et al. BMC Medicine 2013 11:242 doi:10.1186/1741-7015-11-242