Table 3 Measures of agreement and validity for infant outcomes for prospective data and pregnancy history survey
Pregnancy history survey data | Prospective data | p value | ||
|---|---|---|---|---|
Live birth that survived to 28 days | Stillbirth | Live birth followed by neonatal death | ||
Difference in pregnancy outcome dates between data sources (n = 202) | ||||
≤ 30 days (n = 62) | 43 (25.0) | 9 (31.0) | 10 (20.0) | |
> 30- < 100 days (n = 16) | 6 (4.9) | 4 (13.8) | 6 (0.1) | |
≥ 100 days (n = 124) | 74 (60.2) | 16 (55.2) | 34 (0.7) | |
Sex match (n = 62)*+ | ||||
Match | 43 (100.0) | 3 (75.0) | 9 (100.0) | |
Not match | 0 (0.0) | 1 (25.0) | 0 (0.0) | 0.071 |
Validity outcome data (n = 62)* | ||||
Live birth, survived > 28 days | 43 (100.0) | 0 (0.0) | 0 (0.0) | |
Stillbirth | 0 (0.0) | 5 (55.6) | 1 (10.0) | |
Neonatal death | 0 (0.0) | 4 (44.4) | 9 (90.0) | 0.001 |
Validity measures (n = 62)*~ | ||||
Sensitivity (%) | 100.0 | 55.6 | 90.0 | |
Specificity (%) | 100.0 | 98.1 | 92.3 | |
Positive predictive value (%) | 100.0 | 83.3 | 69.2 | |
Negative predictive value (%) | 100.0 | 92.9 | 98.0 | |
Proportion correctly classified (%) | 100.0 | 91.9 | 91.9 | |