Exposure status | N | Age (years)a | Height (cm)a | Tenure (yrs)a | Ever smokerb | Current smokerb | Primary education onlyb | Current Dusta (mg/m3) | Current Quartza (mg/m3) | Cumulative dust exposurea (mg·yr/m3) | Cumulative quartz exposurea (mg·yr/m3) |
---|---|---|---|---|---|---|---|---|---|---|---|
Development | 47 | 36.1(9.6) | 166.0(6.3) | 9.3(6.9) | 7(15.2) | 4(8.7) | 43(91.5) | 10.3 (16.3) | 1.27(3.40) | 136.3(129.0) | 6. 7(6.3) |
Mine | 78 | 36.1(6.5) | 165.4(6.4) | 9.4(5.3) | 24(30.8) | 6(7.7) | 71(91.0) | 0.66(0.61) | 0.03(0.10) | 23.5(48.8) | 1.2(2.4) |
Other production workers | 125 | 36.9(6.9) | 163.9(6.5) | 11.5(5.1) | 30(24.0) | 13(10.4) | 108(86.4) | 0.88(1.6) | 0.10(0.46) | 24.5(51.4) | 1.5(2.6) |
All | 250 | 36.5(7.3) | 164.7(6.4) | 10.4(5.6) | 61(24.5) | 23(9.2) | 222(88.8) | 3.7(9.97) | 0.48(2.06) | 45.2(84.0) | 2.4(4.1) |
P | 0.714c | 0.098c | 0.008c | 0.148d | 0.803d | 0.752d | <0.0001c | <0.002c | <0.0001c | <0.0001c |