|
Spontaneous abortion rate for Arkansas and study population |
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| Live Births |
Spontaneous Abortions |
Rate per 1000 Live Births |
p value (1) |
|
|
|
||||
| State of Arkansas (2) |
36,356 |
930 |
25.58 |
---- |
| All mothers (3) |
||||
| Pregnancy 1 |
240 |
31 |
129.16 |
< 0.0001 |
| Pregnancy 2 |
218 |
19 |
87.15 |
< 0.0001 |
| Pregnancy 3 |
124 |
23 |
185.48 |
< 0.0001 |
| Pregnancy 4 |
71 |
11 |
154.90 |
< 0.0001 |
|
Notes: (1)X-square p values calculated using data for each pregnancy and state of Arkansas data. (2) Data are for year 1996; spontaneous abortions defined as < 20 weeks. (3) For comparison purposes, study population rates calculated as if all pregnancy outcomes for a particular pregnancy order occurred in one year. Cell frequencies for pregnancy 5 and greater were too small for analysis. | ||||
Farley Cerebrospinal Fluid Research 2006 3:10 doi:10.1186/1743-8454-3-10 |
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