Table 1 Health characteristics of e-waste recyclers and non-e-waste recyclers in Accra-Ghana
|  | E-waste Recyclers Mean ± SE | Non-E-waste Recyclers Mean ± SE | T-test | P-value |
|---|---|---|---|---|
Blood pressure at Wave I | ||||
 Systolic Pressure | 123.06 ± 1.03 | 128.57 ± 2.12 | − 2.63 | 0.01 |
 Diastolic Pressure | 73.61 ± 0.83 | 76.46 ± 1.50 | − 1.79 | 0.07 |
 Pulse Pressure | 49.46 ± 0.94 | 52.11 ± 1.24 | − 1.63 | 0.11 |
 Arterial Pressure | 90.09 ± 0.79 | 93.83 ± 1.63 | − 2.33 | 0.02 |
 Heart rate | 73.69 ± 0.97 | 74.38 ± 1.64 | −0.38 | 0.70 |
Blood pressure at Wave II | ||||
 Systolic Pressure | 119.85 ± 1.03 | 127.00 ± 2.45 | − 3.17 | 0.002 |
 Diastolic Pressure | 72.19 ± 0.82 | 75.52 ± 1.77 | − 1.96 | 0.05 |
 Pulse Pressure | 47.67 ± 1.08 | 51.48 ± 1.53 | − 2.00 | 0.04 |
 Arterial Pressure | 88.07 ± 0.74 | 92.68 ± 1.89 | − 2.74 | 0.01 |
 Heart rate | 73.44 ± 1.14 | 69.36 ± 1.54 | 2.06 | 0.04 |
Blood pressure at Wave III | ||||
 Systolic Pressure | 119.62 ± 1.38 | 129.13 ± 2.99 | −3.31 | 0.001 |
 Diastolic Pressure | 70.90 ± 1.07 | 75.96 ± 1.96 | − 2.43 | 0.01 |
 Pulse Pressure | 48.71 ± 1.19 | 53.18 ± 1.62 | −2.12 | 0.03 |
 Arterial Pressure | 87.14 ± 1.04 | 93.68 ± 2.23 | −3.03 | 0.003 |
 Heart rate | 73.82 ± 1.05 | 73.62 ± 1.93 | 0.10 | 0.92 |
Ambient exposure (μg/m3) | ||||
 PM2.5 (at Wave I) | 80.39 ± 5.59 | 39.03 ± 2.34 | 4.95 | < 0.001 |
 PM2.5 (Wave II) | 70.49 ± 2.45 | 49.50 ± 7.23 | 3.43 | < 0.001 |
 PM2.5 (Wave III) | 70.49 ± 3.79 | 87.50 ± 14.56 | −1.48 | 0.14 |
BMI | ||||
 Wave I | 22.52 ± 0.25 | 23.82 ± 0.42 | −2.83 | 0.01 |
 Wave II | 23.96 ± 0.30 | 24.14 ± 0.51 | − 0.32 | 0.76 |
 Wave III | 24.18 ± 0.34 | 24.11 ± 0.59 | 0.11 | 0.92 |