Table 2 Sociodemographic factors of seropositive participants for chikungunya, flavivÃrus and probable dengue from seroepidemiological research in the city of Juazeiro do Norte, Brazil, 2018
Variables (N°) | N | Positive Chikungunya patients | Positive Flavivirus patients | Probable Dengue Cases | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
N + | Crude PR (95% CI) | PR (95% CI) Adjusted by age group | N + | Crude RP (95% IC) | PR (95% CI) Adjusted by age group | N + | Crude RP (95% IC) | PR (95% CI) Adjusted by age group | ||
Gender (404) | ||||||||||
 Male | 128 | 68 | 1.12 (0.75–1.58) | – | 120 | 0.97 (0.92–1.03) | – | 46 | 1.07 (0.81–1.41) | – |
 Female | 276 | 35 | 1.00 | – | 253 | 1.00 | – | 107 | 1.00 | – |
Age group in years (404) | ||||||||||
 4–19 | 44 | 09 | 1.00 | – | 33 | 1.00 | – | 21 | 1.00 | – |
 20–45 | 177 | 41 | 1.13 (0.59–2.15) | – | 161 | 1.21 (1.01–1.44) ** | – | 68 | 1.24 (0.86–1.78) | – |
 46–60 | 69 | 15 | 1.06 (0.63–2.21) | – | 68 | 1.14 (0.94–1.39) | – | 27 | 1.21 (0.79–1.86) | – |
  > 60 | 114 | 38 | 1.62 (0.86–3.08) | – | 111 | 1.29 (1.09–1.54) ** | – | 37 | 1.47 (0.97–2.20) | – |
Educational level (404) | ||||||||||
 Illiterate | 234 | 65 | 1.85 (0.63–5.36) | – | 217 | 1.03 (0.88–1.19) | – | 73 | 1.92 (1.28–2.88)** | – |
 Elementary School | 38 | 10 | 1.75 (0.54–5.65) | – | 36 | 1.05 (0.89–1.24) | – | 13 | 1.75 (0.99–3.09) | – |
 High School | 112 | 25 | 1.48 (0.49–4.46) | – | 102 | 1.01 (0.86–1.18) | – | 55 | 1.22 (0.81–1.83) | – |
 University graduate | 20 | 3 | 1.00 | – | 18 | 1.00 | – | 12 | 1.00 | – |
Occupation/work (404) | ||||||||||
 Retired | 97 | 31 | 1.17 (0.54–2.55) | – | 93 | 1.19 (1.01–1.41) | – | 26 | 1.07 (0.69–1.65) | – |
 Informal work | 83 | 19 | 1.64 (0.79–3.39) | – | 54 | 1.19 (1.01–1.41) | – | 23 | 2.20 (1.29–3.42)** | – |
 Unemployed | 67 | 18 | 1.38 (0.63–2.99) | – | 79 | 1.18 (0.99–1.39) | – | 30 | 1.38 (0.89–2.13) | – |
 Housewife | 65 | 15 | 1.18 (0.53–2.63) | – | 61 | 1.16 (0.98–1.38) | – | 26 | 1.25 (0.80–1.94) | – |
 Permanent job | 56 | 13 | 1.19 (0.52–2.70) | – | 57 | 1.05 (0.87–1.27) | – | 30 | 1.11 (0.73–1.70) | – |
 Student | 36 | 07 | 1.00 | – | 29 | 1.00 | – | 18 | 1.00 | – |
Family income (404) £ | ||||||||||
  < 954 | 188 | 50 | 1.59 (0.26–9.70) | – | 175 | 1.11 (0.77–1.60) | – | 68 | 1.08 (0.34–3.41) | – |
 Mid 954 and 1999 | 119 | 31 | 1.56 (0.25–9.46) | – | 108 | 1.08 (0.75–1.56) | – | 42 | 1.05 (0.33–3.36) | – |
 Mid 2000 and 4599 | 85 | 19 | 1.34 (0.21–8.38) | – | 80 | 1.12 (0.78–1.62) | – | 38 | 1.34 (0.42–4.26) | – |
  ≥ 5000 | 06 | 01 | 1.00 | – | 05 | 1.00 | – | 02 | 1.00 | – |
Self-reported arbovirus | ||||||||||
 CHIKV | 92 | 64 | 5.05 (3.70–6.89)** | 4.99 (3.64–6.84)** | 88 | 1.03 (0.94–1.14) | – | 27 | 1.21 (0.75–1.95) | – |
 DENV | 112 | 29 | 1.01 (0.70–1.46) | 2.37 (1.32–4.25)** | 108 | 1.06 (1.00–1.11) | 1.05 (1.01–1.11)* | 47 | 1.15 (0.88–1.50) | – |
 ZIKV | 22 | 10 | 1.85 (1.13–3.03)* | – | 21 | 1.04 (0.99–1.10) | – | 10 | 0.79 (0.56–1.10) | – |
Underlying diseases | ||||||||||
 Hypertension | 104 | 32 | 1.33 (0.92–1.93) | – | 102 | 1.09 (1.04–1.15)** | 1.00 (0.98–1.03) | 28 | 1.70 (1.20–2.40)** | 1.05 (1.02–1.07)** |
 Diabetes | 50 | 15 | 1.26 (0.78–2.03) | – | 50 | 1.11 (1.06–1.15)** | 1.01 (0.99–1.03) | 17 | 1.27 (0.84–1.92) | 0.83 (0.55–1.27) |
 High Cholesterol | 47 | 15 | 1.28 (0.81–2.00) | – | 47 | 1.09 (1.06–1.13)* | 1.04 (1.01–1.07)** | 14 | 0.76 (0.48–1.20) | 0.82 (0.51–1.32) |
 Anxiety | 20 | 7 | 1.39 (0.74–2.59) | – | 20 | 1.08 (1.05–1.12)* | 1.06 (1.02–1.09)** | 08 | 1.05 (0.61–1.83) | 1.10 (0.62–1.95) |
 Asthma | 8 | 5 | 2.51 (1.43–4.41)** | 2.33 (1.31–4.11)** | 7 | 1.08 (1.05–1.10) | – | 7 | 1.08 (1.05–1.10) | – |
 Artrhitis | 18 | 9 | 2.04 (1.24–3.34)** | 1.78 (1.05–3.00)** | 8 | 1.08 (1.04–1.11) | – | 8 | 1.08 (1.04–1.11) | – |
Care of standing water and garbage (404) | 242 | 55 | 0.76 (0.54–1.06) | – | 224 | 1.00 (0.94–1.06) | – | 103 | 1.37 (1.04–1.81)** | 0.90 (0.85–0.95)** |