Mean duration (y) in pottery work by time between first employment in potteries and diagnosis of rheumatoid arthritis
| Time to diagnosis | Men | Women | All | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Cases | Referents | Cases | Referents | Cases | Referents | ||||||
| <5 y: | |||||||||||
| Mean | 3.4 | 3.5 | 1.9 | 2.4 | 2.9 | 3.1 | |||||
| SD | 1.4 | 2.3 | 1.3 | 1.5 | 1.5 | 2.1 | |||||
| n | 8 | 32 | 4 | 16 | 12 | 48 | |||||
| 5<25 y: | |||||||||||
| Mean | 14.0 | 15.2 | 12.5 | 14.1 | 13.7 | 15.0 | |||||
| SD | 5.1 | 6.1 | 2.6 | 4.4 | 4.7 | 5.8 | |||||
| n | 18 | 72 | 4 | 16 | 22 | 88 | |||||
| 25<50 y: | |||||||||||
| Mean | 27.1 | 31.2 | 29.8 | 36.5 | 27.9 | 32.7 | |||||
| SD | 6.9 | 6.7 | 9.2 | 7.3 | 7.5 | 7.2 | |||||
| n | 17 | 68 | 7 | 28 | 24 | 96 | |||||
| Overall: | |||||||||||
| Mean | 17.2 | 19.4 | 17.8 | 21.4 | 17.4 | 19.9 | |||||
| SD | 10.5 | 12.0 | 13.8 | 15.8 | 11.3 | 13.1 | |||||
| n | 43 | 172 | 15 | 60 | 58 | 232 | |||||