Table 4.
Estimated Pearson Product Moment (or Tetrachoric) Correlations from Hawaiian High Schools Health Survey for Grade Point Averages (GPAs) and the Center for Epidemiologic Studies-Depression (CESD) Scale
| a Correlations of Interval GPA Over Time (and Ordinal GPA*) | ||||
|---|---|---|---|---|
| Correlations | GPA[9] | GPA[10] | GPA[11] | GPA[12] |
| GPA[9] | 1.00 (1.00) | |||
| GPA[10] | .590 (.610) | 1.00 (1.00) | ||
| GPA[11] | .561 (.568) | .601 (.618) | 1.00 (1.00) | |
| GPA[12] | .494 (.524) | .476 (.513) | .587 (.609) | 1.00 (1.00) |
| b Correlations of Interval WCESD Over Time (and Ordinal WCESD*) | ||||
|---|---|---|---|---|
| Correlations | WCESD[9] | WCESD[10] | WCESD[11] | WCESD[12] |
| WCESD[9] | 1.00 (1.00) | |||
| WCESD[10] | .472 (.550) | 1.00 (1.00) | ||
| WCESD[11] | .452 (.482) | .503 (.539) | 1.00 (1.00) | |
| WCESD[12] | .458 (.509) | .453 (.511) | .520 (.563) | 1.00 (1.00) |
| c Correlations of Interval GPA with Interval WCESD (and Ordinal GPA* with WCESD*) | ||||
|---|---|---|---|---|
| Correlations | GPA[9] | GPA[10] | GPA[11] | GPA[12] |
| WCESD[9] | −.130 (−.154) | −.086 (−.085) | −.063 (−.037) | −.122 (−.082) |
| WCESD[10] | −.095 (−.077) | −.148 (−.162) | −.082 (−.152) | −.059 (−.076) |
| WCESD[11] | −.098 (−.109) | −.120 (−.149) | −.135 (−.141) | −.080 (−.117) |
| WCESD[12] | −.096 (−.223) | −.094 (−.174) | −.083 (−.148) | −.122 (−.156) |
Note:
*
indicates ordinal version of interval scale; see sample sizes in Table 1.