Table 4. Logistic Regression of STEM Major on Covariates with Cohort Interactions (Four-year Sample).
| O.R. | Std Err. | |
|---|---|---|
| Race (White ref) | ||
| Asian | 1.404*** | 0.117 |
| Black | 2.256*** | 0.224 |
| Hispanic | 1.327** | 0.133 |
| Nat. Amer. | 0.954 | 0.413 |
| Parent’s Education (no degree ref) | ||
| College degree | 1.094 | 0.092 |
| Advanced degree | 1.194+ | 0.123 |
| SES | 0.777*** | 0.047 |
| Survey | ||
| HSB (ref.) | ||
| NELS | 2.460 | 3.006 |
| ELS | 0.30 | 0.374 |
| Female | 0.077 | 0.130 |
| Std. Math Score | 1.571** | 0.239 |
| Std. Read Score | 0.830+ | 0.092 |
| Adv. Science Courses | 1.719*** | 0.151 |
| High School GPA | 1.790*** | 0.267 |
| Importance of family | 0.875 | 0.225 |
| Extrinsic values | 1.322 | 0.393 |
| Intrinsic values | 0.797 | 0.123 |
| Interactions: | ||
| Female × Math | 1.696* | 0.433 |
| Female × Read | 0.777 | 0.143 |
| Female × ASC | 0.973 | 0.134 |
| Female × GPA | 1.043 | 0.277 |
| Female × Family | 1.110 | 0.451 |
| Female × E.V. | 1.321 | 0.635 |
| Female × I.V. | 1.011 | 0.253 |
| NELS × Female | 26.22 | 54.65 |
| ELS × Female | 14.10 | 29.00 |
| NELS × Math | 1.150 | 0.231 |
| ELS × Math | 0.969 | 0.178 |
| NELS × Read | 1.031 | 0.147 |
| ELS × Read | 0.926 | 0.126 |
| NELS × ASC | 0.852 | 0.105 |
| ELS × ASC | 0.886 | 0.102 |
| NELS × GPA | 0.639* | 0.138 |
| ELS × GPA | 1.266 | 0.253 |
| NELS × Family | 1.059 | 0.339 |
| ELS × Family | 1.120 | 0.357 |
| NELS × E.V. | 0.781 | 0.282 |
| ELS × E.V. | 0.831 | 0.290 |
| NELS × I.V. | 1.406+ | 0.273 |
| ELS × I.V. | 1.065 | 0.201 |
| NELS × Female × Math | 0.554+ | 0.183 |
| ELS × Female × Math | 0.611+ | 0.183 |
| NELS × Female × Read | 1.303 | 0.319 |
| ELS × Female × Read | 1.619* | 0.358 |
| NELS × Female × ASC | 1.333 | 0.258 |
| ELS × Female × ASC | 0.931 | 0.165 |
| NELS × Female × GPA | 0.832 | 0.315 |
| ELS × Female × GPA | 0.673 | 0.231 |
| NELS × Female × Family | 0.627 | 0.313 |
| ELS × Female × Family | 0.654 | 0.323 |
| NELS × Female × E.V. | 0.684 | 0.400 |
| ELS × Female × E.V. | 0.906 | 0.516 |
| NELS × Female × I.V. | 0.814 | 0.256 |
| ELS × Female × I.V. | 1.324 | 0.400 |
| Constant | 0.028*** | 0.028 |
| Observations | 10800 |
Note: The logistic regression estimations use a combined dataset from HSB, NELS, and ELS. Major choice was standardized across surveys as explained in the Appendix. In each model, the reference category is non-STEM majors. Math and reading test scores are based on standardization of the senior test data for each survey. .
+
p ≤0.10;
*
p ≤.05;
**
p ≤.01;
***
p ≤.001 (two-tailed tests).