Table 3: Comparison of the mean scores of stress, anxiety, depression, and sleep quality among students based on their studying grade.

Variable Degree value
Associate degreeBachelor’s degreeDoctorate degree
Mean ± SDMean ± SDMean ±SD

Stress6.23 ± 5.058.51 ± 5.087.62 ± 5.210.059
Anxiety3.90 ± 3.314.89 ± 4.294.25 ± 4.050.344
Depression4.17 ± 4.256.43 ± 5.384.96 ± 4.840.029
Sleep quality4.37 ± 2.144.89 ± 2.463.94 ± 2.020.028