Mean exposure concentration (μg/m3) by time between first employment in the potteries and diagnosis of rheumatoid arthritis
| Time to diagnosis | Men | Women | All | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Cases | Referents | Cases | Referents | Cases | Referents | ||||||
| <5 y: | |||||||||||
| Mean | 109.8 | 97.2 | 100.3 | 96.7 | 106.6 | 97.0 | |||||
| SD | 51.1 | 59.7 | 54.4 | 62.5 | 49.9 | 60.0 | |||||
| n | 8 | 32 | 4 | 16 | 12 | 48 | |||||
| 5<25 y: | |||||||||||
| Mean | 133.4 | 148.5 | 88.0 | 95.2 | 124.2 | 138.8 | |||||
| SD | 55.0 | 75.6 | 91.7 | 106.8 | 63.6 | 84.0 | |||||
| n | 18 | 72 | 4 | 16 | 22 | 88 | |||||
| 25<50 y: | |||||||||||
| Mean | 153.5 | 152.0 | 155.2 | 129.8 | 154.0 | 145.5 | |||||
| SD | 91.4 | 67.7 | 108.6 | 56.9 | 94.3 | 65.2 | |||||
| n | 17 | 68 | 7 | 28 | 24 | 96 | |||||
| Overall: | |||||||||||
| Mean | 137.0 | 140.3 | 121.3 | 111.7 | 132.9 | 132.9 | |||||
| SD | 71.4 | 72.4 | 92.8 | 75.2 | 76.9 | 74.1 | |||||
| n | 43 | 172 | 15 | 60 | 58 | 232 | |||||