Table 2 Distribution of positive results by NUTS (Nomenclature of Territorial Units for Statistics) 2 and 3 region and estimated true prevalence
Region | Sampling sites (n) | Samples (n) | Positive samples (n) | Crude positivity rate (%) | Adjusted positivity rate (%) | True prevalence (%) | 95% Confidence interval |
|---|---|---|---|---|---|---|---|
Norte | 149 | 1285 | 82 | 6.4 | 6.3 | 5.5 | 4.4–6.9 |
Alto Minho | 12 | 72 | 6 | 8.3 | 8.5 | 7.8 | 3.6–16.0 |
Cávado | 17 | 160 | 6 | 3.8 | 3.5 | 2.6 | 1.0–6.6 |
Ave | 16 | 155 | 9 | 5.8 | 5.4 | 4.6 | 2.3–9.3 |
Área Metropolitana do Porto | 60 | 591 | 44 | 7.4 | 7.4 | 6.6 | 4.9–8.9 |
Alto Tâmega | 4 | 29 | 0 | 0.0 | 0.0 | 0.0 | 0–11.7 |
Tâmega e Sousa | 23 | 163 | 9 | 5.5 | 5.6 | 4.8 | 2.5–9.3 |
Douro | 13 | 79 | 6 | 7.6 | 7.9 | 7.2 | 3.4–14.9 |
Terras de Trás-os-Montes | 4 | 36 | 2 | 5.6 | 2.0 | 1.1 | 0.2–6.0 |
Centro | 119 | 768 | 51 | 6.6 | 6.5 | 5.8 | 4.3–7.6 |
Oeste | 12 | 145 | 8 | 5.5 | 4.9 | 4.1 | 1.9–8.6 |
Região de Aveiro | 19 | 146 | 12 | 8.2 | 7.7 | 6.9 | 3.8–12.3 |
Região de Coimbra | 21 | 114 | 7 | 6.1 | 6.1 | 5.3 | 2.5–11.1 |
Região de Leiria | 14 | 103 | 6 | 5.8 | 6.2 | 5.4 | 2.5–11.4 |
Viseu Dão-Lafões | 15 | 67 | 3 | 4.5 | 4.2 | 3.3 | 0.9–11.4 |
Beira Baixa | 7 | 33 | 2 | 6.1 | 5.9 | 5.1 | 1.4–16.9 |
Médio Tejo | 16 | 73 | 6 | 8.2 | 9.8 | 9.2 | 4.5–17.8 |
Beiras e Serra da Estrela | 15 | 87 | 7 | 8.0 | 8.8 | 8.1 | 4.0–15.7 |
Área Metropolitana de Lisboa | 25 | 1005 | 47 | 4.7 | 4.9 | 4.0 | 3.0–5.4 |
Alentejo | 52 | 463 | 9 | 1.9 | 1.9 | 0.9 | 0.4–2.3 |
Alentejo Litoral | 10 | 70 | 1 | 1.4 | 1.3 | 0.3 | 0.0–5.2 |
Baixo Alentejo | 8 | 105 | 1 | 1.0 | 0.8 | 0.0 | 0.0–3.5 |
Lezíria do Tejo | 10 | 87 | 2 | 2.3 | 2.3 | 1.4 | 0.3–7.5 |
Alto Alentejo | 9 | 57 | 1 | 1.8 | 1.4 | 0.5 | 0.0–6.3 |
Alentejo Central | 15 | 144 | 4 | 2.8 | 2.7 | 1.8 | 0.6–5.1 |
Algarve | 2 | 242 | 12 | 5.0 | 4.2 | 3.3 | 1.7–6.4 |
Total | 347 | 3763 | 201 | 5.3 | 5.6 | 4.8 | 4.1–5.5 |