highly significantp < 0.001
A chi-square test revealed highly significant age-related differences in sleep disturbance severity (χ 2 = 59.400, df = 2, p < 0.001).
A chi-square test revealed highly significant age-related differences in sleep disturbance severity (χ 2 = 59.400, df = 2, p < 0.001).
Conversely, the sleep duration and sleep disturbance dimensions consistently failed to reach statistical significance across all evaluated educational groups and activity levels.