Table 1.
Characteristics of the study population
| Variable | Controls (%) | Cases (%) | p-value |
|---|---|---|---|
| Maternal Age (%) | 167 (100) | 130 (100) | 0.92* |
| 15-20 | 35 (21) | 26 (20) | |
| 21-23 | 32 (19) | 22 (17) | |
| 24-28 | 38 (23) | 27 (21) | |
| 29-34 | 32 (19) | 30 (23) | |
| 35-45 | 30 (18) | 25 (19) | |
| Gestational Age | 167 (100) | 130 (100) | p<0.01* |
| <37 | 14(8) | 39 (30) | |
| 37-38 | 49 (29) | 42 (32) | |
| >=39 | 104 (62) | 49 (38) | |
| Gravidity | 167 (100) | 130 (100) | 0.25* |
| 1 | 43 (26) | 47 (36) | |
| 2 | 48 (29) | 31 (24) | |
| 3 | 30 (18) | 18 (14) | |
| 4-9 | 46 (28) | 34 (26) | |
| Parity | 167 (100) | 130 (100) | 0.02* |
| 0 | 52 (31) | 58 (45) | |
| 1 | 59 (35) | 30 (23) | |
| 2 | 31 (19) | 17 (13) | |
| 3-8 | 25 (15) | 25 (19) | |
| Race/ethnicity | 0.92* | ||
| Hispanic white | 161 (96) | 125 (96) | |
| Hispanic black | 1 (1) | 1 (1) | |
| non-Hispanic black | 3 (2) | 3 (2) | |
| Arab | 1 (1) | 1 (1) | |
| Phillipino | 1 (1) | 0 (0) |
Note: Percentages not totaling 100% are due to rounding errors.
*
P-value obtained by Pearson's chi-squared test.