Unadjusted and adjusted mean hand-grip strength (kg) at exam IV (1991–93) and linear regression coefficients by occupational intensity score categories at exam I (1965–68)
| Unadjusted | Risk factor adjusted* | Risk factor adjusted† | |||||
|---|---|---|---|---|---|---|---|
| n | Mean (SD) | Coeff/SE | Mean (SE) | Coeff/SE | Mean (SE) | Coeff/SE | |
| CASI score, education, and haemoglobin levels were assessed at exam IV; all other covariates were assessed at exam I. | |||||||
| *Adjusted for coffee consumption, physical activity, BMI, glucose, cognitive function (CASI score), education, haemoglobin, arthritis, and forearm fracture. | |||||||
| †Adjusted for coffee consumption, physical activity, BMI, glucose, cognitive function (CASI score), education, haemoglobin, arthritis, forearm fracture, and hand-grip strength at exam I. | |||||||
| Categories for mercury intensity scores are 0, 1–20, 21–30, ⩾31; categories for the four other intensity scores are 0, 1–39, 40–79, ⩾80. | |||||||
| Coeff, parameter estimate from linear regression models; SE, standard error. | |||||||
| p for trend obtained from linear regression models. | |||||||
| Pesticide | |||||||
| Zero | 3266 | 30.3 (6.7) | −0.022/0.007 | 30.4 (0.1) | −0.0032/0.006 | 30.4 (0.1) | 0.0053/0.005 |
| Low | 64 | 31.2 (7.0) | 32.3 (0.7) | 31.6 (0.6) | |||
| Medium | 119 | 29.4 (7.9) | 30.7 (0.6) | 31.1 (0.5) | |||
| High | 66 | 27.6 (5.6) | 29.3 (0.7) | 30.2 (0.6) | |||
| p for trend | <0.001 | 0.580 | 0.275 | ||||
| Solvent | |||||||
| Zero | 1699 | 30.3 (6.7) | −0.010/0.004 | 30.3 (0.1) | −0.0013/0.004 | 30.4 (0.1) | −0.0026/0.003 |
| Low | 1145 | 30.5 (6.8) | 30.7 (0.2) | 30.6 (0.2) | |||
| Medium | 484 | 29.9 (7.0) | 30.5 (0.3) | 30.3 (0.2) | |||
| High | 187 | 29.4 (6.4) | 30.2 (0.4) | 30.5 (0.4) | |||
| p for trend | 0.014 | 0.730 | 0.414 | ||||
| Metal | |||||||
| Zero | 2076 | 30.3 (6.8) | −0.004/0.005 | 30.3 (0.1) | 0.0065/0.005 | 30.4 (0.1) | −0.0001/0.004 |
| Low | 1039 | 30.4 (6.6) | 30.7 (0.2) | 30.5 (0.2) | |||
| Medium | 318 | 30.1 (6.9) | 30.9 (0.3) | 30.3 (0.3) | |||
| High | 82 | 29.6 (6.7) | 30.5 (0.7) | 30.5 (0.5) | |||
| p for trend | 0.441 | 0.168 | 0.984 | ||||
| Manganese | |||||||
| Zero | 2788 | 30.3 (6.8) | 0.004/0.006 | 30.4 (0.1) | 0.0102/0.005 | 30.5 (0.1) | 0.0038/0.005 |
| Low | 392 | 30.6 (6.9) | 31.2 (0.3) | 30.9 (0.3) | |||
| Medium | 147 | 30.7 (6.4) | 30.9 (0.5) | 30.6 (0.4) | |||
| High | 59 | 30.4 (6.8) | 31.1 (0.8) | 30.8 (0.6) | |||
| p for trend | 0.554 | 0.063 | 0.409 | ||||
| Mercury | |||||||
| Zero | 2891 | 30.3 (6.9) | −0.004/0.011 | 30.5 (0.1) | 0.0022/0.009 | 30.5 (0.1) | −0.0007/0.008 |
| Low | 157 | 31.1 (6.0) | 31.0 (0.5) | 30.5 (0.4) | |||
| Medium | 195 | 30.6 (6.5) | 30.9 (0.4) | 31.0 (0.4) | |||
| High | 143 | 29.8 (6.2) | 30.3 (0.5) | 30.2 (0.4) | |||
| p for trend | 0.700 | 0.814 | 0.929 | ||||