Table 2. . Change in overall and core grade point average with 95% confidence intervals.
| GPA | Mean GPA (95% CI) | Mean% difference (95% CI) | p-value | ||
|---|---|---|---|---|---|
| Preconcussion | Post-concussion | ||||
| All concussion (n = 33) | Overall | 82.91 (79.92, 85.91) | 82.70 (79.87, 85.53) | -0.21 (-1.57, 1.14) | 0.75 |
| Core | 80.03 (76.44, 83.62) | 79.40 (75.72, 83.08) | -0.63 (-2.81, 1.56) | 0.56 | |
| Sex | |||||
| Male (n = 19) | Overall | 80.95 (77.12, 84.78) | 80.51 (77.13, 83.88) | -0.44 (-2.26, 1.38) | 0.62 |
| Core | 77.99 (73.64, 82.33) | 77.18 (72.23, 82.12) | -0.81 (-72, 2.10) | 0.57 | |
| Female (n = 14) | Overall | 85.58 (80.58, 90.58) | 85.67 (80.76, 90.57) | 0.09 (-2.25, 2.43) | 0.93 |
| Core | 82.80 (76.32, 89.27) | 82.41 (76.57, 88.26) | -0.38 (-4.15, 3.39) | 0.83 | |
| Age | |||||
| 13–14 years (n = 20) | Overall | 81.83 (78.37, 85.29) | 81.84 (78.86, 84.81) | 0.01 (-2.11, 2.12) | 0.97 |
| Core | 78.84 (74.53, 83.14) | 79.13 (75.90, 82.36) | 0.30 (-2.56, 3.16) | 0.83 | |
| 15–17 years (n = 13) | Overall | 84.57 (78.56, 90.58) | 84.02 (77.90, 90.14) | -0.55 (-2.12, 1.01) | 0.46 |
| Core | 81.87 (74.89, 88.84) | 79.81 (71.02, 88.60) | -2.05 (-5.80, 1.69) | 0.25 | |
| Initial symptom severity | |||||
| PCSS 0–12 (n = 12) | Overall | 84.03 (78.28, 89.77) | 85.33 (80.56, 90.09) | 1.30 (-0.79, 3.40) | 0.19 |
| Core | 82.90 (77.26, 88.53) | 83.47 (78.45, 88.51) | 0.58 (-2.49, 3.65) | 0.68 | |
| PCSS 13–32 (n = 7) | Overall | 84.51 (78.01, 91.01) | 83.58 (77.71, 89.45) | -0.93 (-4.11, 2.25) | 0.53 |
| Core | 80.69 (72.52, 88.86) | 79.96 (73.82, 86.09) | -0.73 (-4.33, 2.87) | 0.66 | |
| PCSS 33+ (n = 14) | Overall | 79.81 (74.47, 85.15) | 77.98 (72.91, 83.05) | -1.83 (-4.09, 0.44) | 0.10 |
| Core | 75.29 (68.23, 82.35) | 73.9 (64.10, 82.08) | -2.20 (-8.43, 4.03) | 0.44 | |
| Previous concussion | |||||
| No history (n = 14) | Overall | 84.68 (80.08, 89.27) | 84.79 (80.22, 89.36) | 0.11 (-2.33, 2.55) | 0.92 |
| Core | 81.40 (75.97, 86.83) | 82.25 (77.44, 87.06) | 0.84 (-1.191, 3.61) | 0.52 | |
| History (n = 19) | Overall | 81.61 (77.37, 85.84) | 81.16 (77.36, 84.95) | -0.45 (-2.21, 1.30) | 0.59 |
| Core | 79.02 (73.83, 84.21) | 77.30 (71.80, 82.81) | -1.72 (-5.05, 1.62) | 0.29 | |
| Private school | |||||
| Private (n = 8) | Overall | 82.86 (75.90, 89.81) | 83.06 (77.63, 88.48) | 0.20 (-2.89, 3.29) | 0.89 |
| Core | 79.56 (70.53, 88.59) | 80.51 (73.36, 87.65) | 0.95 (-3.07, 4.96) | 0.59 | |
| Public (n = 25) | Overall | 82.93 (79.35, 86.51) | 82.58 (79.07, 86.10) | -0.35 (-1.98, 1.29) | 0.67 |
| Core | 80.18 (76.00, 84.36) | 79.04 (74.49, 83.60) | -1.1324 (-3.83, 1.57) | 0.40 | |
| School accommodation | |||||
| Adequate (n = 20) | Overall | 82.79 (78.86, 86.73) | 82.92 (79.38, 86.45) | 0.13 (-1.14, 1.39) | 0.84 |
| Core | 79.73 (75.03, 84.42) | 80.43 (76.38, 84.48) | 0.70 (-1.05, 2.45) | 0.41 | |
| Poor (n = 13) | Overall | 83.09 (77.75, 88.44) | 82.36 (76.98, 87.74) | -0.73 (-3.89, 2.42) | 0.62 |
| Core | 80.50 (74.04, 86.96) | 77.82 (70.08, 85.57) | -2.67 (-7.79, 2.44) | 0.27 | |
| PPCS (symptoms greater than 28 days) | |||||
| PCS (n = 15) | Overall | 81.92 (78.12, 85.72) | 80.72 (76.83, 84.62) | -1.20 (-3.51, 1.12) | 0.25 |
| Core | 77.13 (71.68, 82.59) | 75.70 (69.48, 81.92) | -1.43 (-5.44 2.58) | 0.44 | |
| No PCS (n = 18) | Overall | 83.74 (78.91, 88.56) | 84.34 (80.01, 88.58) | 0.60 (-1.10, 2.31) | 0.41 |
| Core | 82.44 (77.48, 87.40) | 82.48 (78.13, 86.84) | 0.04 (-2.68, 2.84) | 0.95 | |