From: Validity of parental work information on the birth certificate
 |  | Women employed outside home according to both sourcesa | |||||
---|---|---|---|---|---|---|---|
North American Industry Classification System (NAICS) industrial sector | Number (%) misclassified as homemaker or student on vital record | Number by interview | Number by birth certificateb | Number by both sources | Sensitivity (%) (95% CI) | Specificity (%) (95% CI) | Kappa |
Manufacturing | 4 (22.2) | 14 | 15 | 12 | 85.7 (60.3 – 97.5) | 98.6 (96.2 – 99.6) | 0.82 |
Wholesale & retail trade | 25 (36.8) | 42 | 40 | 35 | 83.3 (69.8 – 92.4) | 97.3 (94.1 – 99.0) | 0.82 |
Finance & insurance | 4 (18.2) | 17 | 17 | 16 | 94.1 (74.3 – 99.7) | 99.5 (97.7 – 99.9) | 0.94 |
Professional, scientific, & technical services | 4 (28.6) | 10 | 9 | 7 | 70.0 (38.0 – 91.7) | 99.1 (97.0 – 99.9) | 0.73 |
Administration & support; waste management | 8 (38.1) | 12 | 11 | 7 | 58.3 (30.2 – 82.8) | 98.1 (95.6 – 99.4) | 0.59 |
Educational services | 8 (21.1) | 29 | 27 | 24 | 82.8 (65.8 – 93.4) | 98.5 (95.9 – 99.6) | 0.84 |
Health care & social assistance | 10 (15.4) | 52 | 53 | 48 | 92.3 (82.5 – 97.5) | 97.2 (93.8 – 98.9) | 0.89 |
Accommodation & food services | 31 (67.4) | 15 | 16 | 13 | 86.7 (62.5 – 97.7) | 98.6 (96.2 – 99.6) | 0.83 |
Public administration | 5 (20.8) | 19 | 14 | 13 | 68.4 (45.5 – 86.1) | 99.5 (97.7 – 99.9) | 0.77 |