Table 14.

Variables predicting academic performance quality and study grades/output.

		95% Confidence Interval for Odds Ratio
Model	B	Lower	Odds Ratio	Upper
Academic Performance Quality
Improvement
Constant	2.42
Age	−0.12 *	0.81	0.89	0.97
Non-Western ethnicity	−1.50 **	0.10	0.32	0.99
R2 = 0.05 (Cox-Snell) 0.07 (Nagelkerke). Model X2 (3) = 12.7 p = 0.005
Impairment
Constant	−1.08
Stress	0.26 **	1.08	1.29	1.54
Fatigue	0.26 **	1.30	1.30	1.52
R2 = 0.13 (Cox-Snell), 0.18 (Nagelkerke). Model X2 (2) = 34.63, p < 0.001
Study grades/output
Increased
Constant	1.69
Age	−0.10 *	0.84	0.91	0.98
R2 = 0.03 (Cox-Snell), 0.04 (Nagelkerke). Model X2 (1) = 6.92, p = 0.009
Lower
Constant	−1.47
Stress	0.24 *	1.06	1.27	1.53
Fatigue	0.22 **	1.06	1.25	1.46
R2 = 0.10(Cox-Snell), 0.15 (Nagelkerke). Model X2 (2) = 25.88, p < 0.001

Note: * p < 0.05, ** p < 0.01.