Table 3 Analyses of symptom scores and COVID-19 responses by sample and age group. 18–29 years 30–54 years 55 years and over Significance Comparison sample  K-10 32.6 (7.3) 30.3 (7.6) 29.1 (8.1) F = 22⁎⁎⁎  PHQ-9 15.2 (6.1) 13.6 (6.3) 13.2 (6.0) F = 14.13, p < .001⁎⁎⁎  GAD-7 12.8 (5.0) 12.0 (5.2) 10.3 (5.5) F = 14.67, p < .001⁎⁎⁎ COVID-19 sample  K-10 33.2 (7.1) 30.4 (8.0) 28.1 (8.1) F = 39.12, p < .001⁎⁎⁎  PHQ-9 15.6 (5.8) 13.6 (6.3) 12.3 (6.5) F = 27.30, p < .001⁎⁎⁎  GAD-7 13.2 (5.0) 12.4 (5.4) 10.5 (5.8) F = 16.77, p < .001⁎⁎⁎ Knows someone diagnosed with COVID-19 2.6% (17/666) 3.3% (21/632) 2.3% (4/171) ꭙ2 = 0.88, p = .64 Extremely concerned about COVID-19 15.0% (100/665) 23.5% (149/634) 35.5% (61/172) ꭙ2 = 37.31, p < .001⁎⁎⁎ Made significant changes to routine 24.8% (165/663) 30.8% (195/629) 37.8% (65/171) ꭙ2 = 13.40, p < .01⁎⁎ ⁎ p < .05. ⁎⁎ p < .01. ⁎⁎⁎ p < .001.