Table 6.
Birth certificate compared with interview for paternal industrial sectors of work during periconceptional perioda
| Fathers employed according to both sources | |||||||
| North American Industry Classification System (NAICS) industrial sectorb | Number (%) missing industry on vital record | Number by interview | Number by birth certificatec | Number by both sources | Sensitivity (%) (95% CI) | Specificity (%) (95% CI) | Kappa |
| Agriculture, forestry, fishing & hunting | 3 (14.3) | 17 | 17 | 13 | 76.5 (52.5 – 92.0) | 99.1 (97.8 – 99.7) | 0.76 |
| Mining | 1 (7.1) | 13 | 11 | 8 | 61.5 (34.1 – 84.3) | 99.3 (98.2 – 99.8) | 0.66 |
| Construction | 22 (24.4) | 67 | 77 | 51 | 76.1 (64.9 – 85.2) | 93.4 (90.6 – 95.6) | 0.66 |
| Manufacturing | 15 (16.1) | 77 | 71 | 55 | 71.4 (60.6 – 80.7) | 95.8 (93.5 – 97.5) | 0.69 |
| Wholesale & retail trade | 17 (18.9) | 71 | 68 | 52 | 73.2 (62.1 – 82.6) | 95.9 (93.6 – 97.6) | 0.70 |
| Transportation & warehousing | 6 (14.6) | 35 | 32 | 24 | 68.6 (51.9 – 82.2) | 98.1 (96.5 – 99.1) | 0.69 |
| Professional, scientific, & technical services | 0 (0.0) | 12 | 14 | 9 | 75.0 (45.9 – 93.2) | 98.9 (97.7 – 99.6) | 0.68 |
| Administration & support; waste management | 8 (38.1) | 11 | 14 | 6 | 54.5 (25.9 – 81.0) | 98.2 (96.7 – 99.2) | 0.47 |
| Educational services | 2 (9.5) | 19 | 19 | 17 | 89.5 (69.4 – 98.2) | 99.5 (98.5 – 99.9) | 0.89 |
| Health care & social assistance | 2 (7.4) | 22 | 22 | 19 | 86.4 (67.2 – 96.4) | 99.3 (98.2 – 99.8) | 0.86 |
| Accommodation & food services | 10 (25.0) | 29 | 21 | 18 | 62.1 (43.7 – 78.2) | 99.3 (98.1 – 99.8) | 0.70 |
| Other services (except public administration) | 2 (6.3) | 28 | 27 | 20 | 71.4 (52.9 – 85.8) | 98.4 (96.8 – 99.3) | 0.71 |
| Public administration | 7 (13.0) | 46 | 47 | 42 | 91.3 (80.3 – 97.2) | 98.8 (97.4 – 99.6) | 0.89 |
a Three months before through three months postconception
b Only industries with 10 or more workers by interview are shown in Table.
cOne father each misclassified as unemployed for agricultural, construction, manufacturing, accommodation/food service, and public administration sectors. Two fathers each misclassified as unemployed for wholesale/retail trade, administration/support and other services sectors. Three fathers in the health care/social assistance sector misclassified as unemployed.