Table 4. Number of deliveries and percent distribution of initiation of prenatal care, timing of Medicaid enrollment, and use of Medicaid-covered services prior to delivery, by study group: California, October 1983.
| Dependent measure | Medicaid | Non-Medicaid | ||
|---|---|---|---|---|
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|
|
|||
| Group 1 | Group 2 | Group 3 | Group 4 | |
|
|
|
|
|
|
| Enrolled 0-3 months of pregnancy | Enrolled 4 or more months of pregnancy | Residents of low-income areas | Residents of high-income areas | |
| Total deliveries | 1,880 | 5,612 | 4,054 | 1,464 |
| Trimester care began1 | Percent distribution | |||
| First | 58.8 | 68.6 | 70.0 | 91.7 |
| Second | 28.2 | 26.7 | 22.3 | 6.5 |
| Third | 10.2 | 4.0 | 5.9 | 1.5 |
| None | 2.8 | 0.7 | 1.9 | 0.3 |
| Trimester enrolled in Medicaid prior to delivery1 | ||||
| First | 3.7 | 71.4 | NA | NA |
| Second | 4.0 | 28.6 | NA | NA |
| Third | 61.3 | 0.0 | NA | NA |
| Delivery month | 31.0 | 0.0 | NA | NA |
| Trimester first used any Medicaid-covered service during pregnancy | ||||
| First | 1.3 | 46.9 | NA | NA |
| Second | 2.7 | 34.8 | NA | NA |
| Third | 96.0 | 18.2 | NA | NA |
1
The timing of first enrollment in Medicaid in relation to the pregnancy episode was estimated by dividing the 9 months preceding all births (in October) into 3 intervals of 3 months each (i.e., January-March = enrolled in the first trimester or enrolled prior to pregnancy; April-June = second trimester; and July-September = third trimester). Note this method is approximate because all pregnancies were not full term.
NOTES: All percents are based on cases with nonmissing data. Percents may not add to 100 because of rounding. NA is not applicable.