Table 2.
Descriptive statistics for independent variables in full sample and by graduate school matriculation status
| Variable | Mean/percentage
|
||
|---|---|---|---|
| Total | Did not matriculate matriculated
|
||
| N = 694 | N = 474 | N = 220 | |
| Independent variable | |||
| Program participation | 23.60 | 21.10 | 29.19*** |
| Mediating variables | |||
| Science identity salience | 7.07 | 6.76 | 7.74*** |
| College GPA | 3.29 | 3.24 | 3.39*** |
| Research experience | 43.24 | 36.75 | 57.19*** |
| Intention for STEM career | 7.38 | 7.00 | 8.00*** |
| Faculty mentor | 45.38 | 40.26 | 56.37*** |
| Control variables | |||
| Parents’ graduate degree (1 = Yes) | 22.80 | 21.10 | 26.40 |
| Low income family (1 = Yes) | 27.99 | 24.90 | 34.50** |
| Siblings | 2.33 | 2.24 | 2.54* |
| English is first language (1 = Yes) | 75.00 | 78.00 | 71.00 |
| First generation student (1 = Yes) | 19.00 | 19.00 | 21.00 |
| Took AP classes | 55.40 | 54.80 | 56.80 |
| Standardized test composite | .00 | .02 | .05 |
| High school GPA | 3.50 | 3.48 | 3.54 |
| Black (1 = Yes) | 50.51 | 51.37 | 48.64 |
| Hispanic (1 = Yes) | 37.95 | 37.63 | 38.64 |
| Female (1 = Yes) | 71.30 | 63.50 | 69.00 |
| Biological science major (1 = Yes) | 64.94 | 65.55 | 63.60 |
| Natural science major (1 = Yes) | 22.94 | 21.56 | 25.91 |
| Math/engineering major (1 = Yes) | 2.30 | 2.75 | 1.60 |
| Baseline intention for STEM career | 8.36 | 8.23 | 8.65** |
| Upper division student (1 = Yes) | 65.00 | 68.29 | 75.45 |
Source The Science Study
*
p < .05;
**
p < .01;
***
p < .001