Table 7.
The details of implementing bias mitigation for the neural network model using stochastic gradient descent.
| Sociodemographic conditions | Optimal threshold | Recall | Specificity | Accuracy | Differencea | ||||||
| Sex | 18.40 |
|
|
|
1.08 b | ||||||
|
|
Male |
|
85.71 c | 58.99 | 59.12 |
|
|||||
|
|
Female |
|
85.19 | 58.43 | 58.63 |
|
|||||
| Marital status | 24.10 |
|
|
|
3.69 | ||||||
|
|
Never been married |
|
76.47 | 87.13 | 87.07 |
|
|||||
|
|
Other groups of marital status |
|
75.00 | 89.35 | 89.25 |
|
|||||
| Working condition | 24.50 |
|
|
|
15.22 | ||||||
|
|
Working >35 hours |
|
66.67 | 95.01 | 94.91 |
|
|||||
|
|
Other groups of working condition |
|
71.88 | 85.00 | 84.90 |
|
|||||
| Race | 18.40 |
|
|
|
26.60 | ||||||
|
|
White |
|
89.66 | 58.64 | 58.85 |
|
|||||
|
|
Black |
|
66.67 | 62.25 | 62.27 |
|
|||||
| Income | 17.30 |
|
|
|
8.89 | ||||||
|
|
An income of <US $20,000 |
|
90.00 | 44.83 | 45.28 |
|
|||||
|
|
Other groups of income |
|
87.10 | 50.82 | 51.02 |
|
|||||
aDifference between recall and specificity after bias mitigation.
bItalicized values indicate an improvement compared to the initial values (50% threshold).