Table:
after-tax low income rate
average after-tax low income gap ratio

including witb
excluding witb
difference
including witb
excluding witb
difference

percent

total population
17.7
17.8
0.1
39.0
39.5
0.5

witb population
56.3
58.3
2.0
28.5
30.9
2.4

female lone-parent family
42.2
42.9
0.7
39.9
40.2
0.3

witb female lone-parent family
53.7
57.2
3.5
24.8
26.6
1.8

Statement: witb recipients had a lower gap ratio compared to the total population.
Question: which population had a lower gap ratio compared to the total population?
Answer: witb population