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Table 2 Results of univariate regression analyses of standardised A level summed tariff and UKCAT total score

From: Comparison of the sensitivity of the UKCAT and A Levels to sociodemographic characteristics: a national study

Predictor variable Outcome variable Intercept (score) Coefficient p§ 95% confidence intervals for regression coefficient
State school UKCAT .16 -.31 <0.001 -.35 to - .27
  A level .21 -.40 <0.001 -.45 to - .36
Non-white ethnicity UKCAT .16 -.43 <0.001 -.47 to - .38
  A level .11 -.29 <0.001 -.34 to - .25
>20 years at application UKCAT .01 -.68 <0.001 -.93 to - .43
  A level .01 -.88 <0.001 -1.21 to - .55
Non-professional background UKCAT .02 -.41 <0.001 -.51 to - .32
  A level .02 -.36 <0.001 -.45 to - .26
Male sex UKCAT -.08 .17 <0.001 .13 to .22
  A level -.01 .01 0.62 -.04 to .06
EASL UKCAT .07 -.47 <0.001 -.53 to - .41
  A level .03 -.20 <0.001 -.26 to - .14
  1. The dependent variables (both standardised as z scores) are regressed on to the WP sociodemographic categories and sex, which serve as the predictor variables.
  2. ATobit regression was used where A level attainment was the dependent variable whilst linear regression was used where UKCAT score was the outcome.
  3. §p values must be interpreted cautiously where confidence intervals are derived by bootstrapping due to the possibility of asymmetric probability distributions.
  4. Excludes state grammar schools.