Comparison of neurological outcome variable results related to peripheral neuropathy for chlorpyrifos (CPF) and referent subjects at baseline (CPF n = 53; referent n = 60) and one-year evaluations (CPF n = 53; referent n = 58)
| Diagnostic categories† | Baseline | No. | p value* | One year | No. | p value* |
|---|---|---|---|---|---|---|
| *Fisher’s exact test or χ2 test. | ||||||
| †See text for definitions and diagnostic criteria. | ||||||
| Subclinical neuropathy | CPF | 1 | >0.99 | CPF | 1 | >0.99 |
| Referent | 1 | Referent | 1 | |||
| Possible neuropathy | CPF | 4 | 0.50 | CPF | 2 | 0.28 |
| Referent | 7 | Referent | 6 | |||
| Probable neuropathy | CPF | 1 | >0.99 | CPF | 0 | 0.50 |
| Referent | 1 | Referent | 2 | |||
| Confirmed neuropathy | CPF | 0 | 0.50 | CPF | 0 | 0.50 |
| Referent | 2 | Referent | 2 | |||