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Table 4 Estimated coefficients of the linear regression model predicting fasting glucose level of participants in the National Child Development Study using the original (left) and the anonymised (right) data

From: A deterministic approach for protecting privacy in sensitive personal data

Coefficient Original data Anonymised data Std. difference
Estimate Std. Err. t value Pr(\(>|t|\)) Estimate Std. Err. t value Pr(\(>|t|\))
Intercept 6.430 0.527 12.211 <2e–16 6.982 0.564 12.379 <2e–16 1.048
Sex (female) − 0.098 0.057 − 1.729 0.084 − 0.153 0.061 − 2.524 0.012 0.959
Smoker (yes) 0.110 0.049 2.253 0.024 0.099 0.048 2.054 0.040 0.212
HDL − 0.229 0.058 − 3.924 9.19e–05 − 0.245 0.059 − 4.119 4.06e–05 0.278
Height − 0.013 0.003 − 4.225 2.57e–05 − 0.017 0.003 − 4.916 1.01e–06 1.10
Weight 0.010 0.002 6.265 5.18e–10 0.011 0.002 6.589 6.59e–11 0.606