TABLE 1.
Proportion of Inconsistent or Unexpected Data by Period (Reported Start Date)
| Before 1986 | 1986–2000 | After 2000 | ||
|---|---|---|---|---|
| (n = 6,132) | (n = 55,549) | (n = 25,350) | Total | |
| Birth dates ≥ start date or ≥ end date of employment | 415 (6.8) | 1,609 (2.9) | 0 (—) | 2,024 (2.3) |
| Ages <15 yrs | 447 (7.3) | 2,098 (3.8) | 419 (1.6) | 2,964 (3.4) |
| Workdays <1 (end date ≤ start date) | 3,430 (55.9) | 1,614 (2.9) | 309 (1.2) | 5,353 (6.1) |
| 0 hr reported | 0 (—) | 26 (0.05) | 185 (0.7) | 211 (0.2) |
| Worked >16 hr/d | 2,748 (44.8) | 974 (1.7) | 99 (0.4) | 3,821 (4.4) |
| Records covering more than 12 mo | 1,692 (27.6) | 11,107 (20.0) | 4,844 (19.1) | 17,646 (20.3) |
| Records covering more than 18 mo | 1,197 (19.5) | 1,989 (3.5) | 521 (2.1) | 3,710 (4.3) |
| Nonconstruction sectors or unknown | 2,724 (44.4) | 18,611 (33.5) | 6,048 (23.8) | 27,383 (31.5) |