Table 2.
Misclassification bias and mean squared error (MSE) for self-reported and MIME-corrected hypertension prevalence
| INS2014 Bias, self-reported (pp) |
INS2014 Bias, MIME-corrected (pp) |
INS2014 MSE, self-reported |
INS2014 MSE, MIME-corrected |
|
|---|---|---|---|---|
| Overall | 11.5 | 0.7 | 0.0132 | 0.0002 |
| Sex | ||||
| Female | 5.9 | −0.5 | 0.0036 | 0.0002 |
| Male | 17.6 | 2.0 | 0.0309 | 0.0007 |
| Age group | ||||
| 25–44 years | 5.0 | −1.0 | 0.0026 | 0.0003 |
| 45–54 years | 13.3 | − 1.5 | 0.0179 | 0.0007 |
| 55–64 years | 18.6 | 5.7 | 0.0347 | 0.0038 |
| 65–74 years | 17.0 | 3.1 | 0.0291 | 0.0014 |
| Educational level | ||||
| ISCED 2011 levels 0–1 | 16.1 | 2.0 | 0.0261 | 0.0007 |
| ISCED 2011 level 2 | 11.1 | −0.1 | 0.0124 | 0.0006 |
| ISCED 2011 levels 3–4 | 11.1 | 2.4 | 0.0125 | 0.0011 |
| ISCED 2011 levels 5–8 | 5.2 | 0.0 | 0.0028 | 0.0003 |
MSE = variance + bias2
Bias is defined as the absolute difference between the INS2014 and INSEF objectively measured prevalence estimates in percentage points (pp)
INSEF – Portuguese Health Examination Survey, INS2014 – National Health Interview Survey 2014, MIME – Misclassification error correction