Table 3.

Prevalence of generalized anxiety symptoms, depression symptoms, psychological distress and COVID-19-related fear stratified by age

	Total	Age—categories in years
	(N = 15 037)	18–24 (N = 2076)	25–34 (N = 3725)	35–44 (N = 3459)	45–54 (N = 2846)	55–64 (N = 2151)	65–74 (N = 662)	≥75 (N = 118)
GAD-7
<5	8289 (55.1%)	915 (44.1%)	2045 (54.9%)	1836 (53.1%)	1645 (57.8%)	1306 (60.7%)	461 (69.6%)	81 (68.7%)
≥5	4226 (28.1%)	618 (29.8%)	1026 (27.5%)	1035 (29.9%)	772 (27.1%)	593 (27.6%)	154 (23.3%)	28 (23.7%)
≥10	1476 (9.8%)	307 (14.8%)	377 (10.1%)	347 (10.0%)	262 (9.2%)	147 (6.8%)	29 (4.4%)	7 (5.9%)
≥15	1046 (7.0%)	236 (11.4%)	277 (7.4%)	241 (7.0%)	167 (5.9%)	105 (4.9%)	18 (2.7%)	2 (1.7%)
PHQ-2
<3	12 880 (85.7%)	1 529 (73.7%)	3 202 (86.0%)	3 005 (86.9%)	2 520 (88.5%)	1 912 (88.9%)	606 (91.5%)	106 (89.8%)
≥3	2 157 (14.3%)	547 (26.3%)	523 (14.0%)	454 (13.1%)	326 (11.5%)	239 (11.1%)	56 (8.5%)	12 (10.2%)
DT
<4	5 238 (34.8%)	676 (32.6%)	1282 (34.4%)	1024 (29.6%)	986 (34.6%)	831 (38.6%)	367 (55.4%)	72 (61.0%)
≥4	9799 (65.2%)	1400 (67.4%)	2443 (65.6%)	2435 (70.4%)	1860 (65.4%)	1320 (61.4%)	295 (44.6%)	46 (39.0%)
COVID-19-related fear
<5	6170 (41.0%)	930 (44.8%)	1709 (45.9%)	1348 (39.0%)	1115 (39.2%)	795 (37.0%)	232 (35.0%)	41 (34.7%)
≥5	8867 (59.0%)	1146 (55.2%)	2016 (54.1%)	2111 (61.0%)	1731 (60.8%)	1356 (63.0%)	430 (65.0%)	77 (65.3%)

Note: GAD-7 = Generalized Anxiety Disorder Scale-7, sum scores of ≥5, ≥10 and ≥15 indicate mild, moderate and severe generalized anxiety symptoms, respectively; PHQ-2 = Patient Health Questionnaire-2, sum scores of ≥3 indicate major depression symptoms; DT = Distress Thermometer, a score ≥4 indicates elevated psychological distress. COVID-19-related fear, ≥5 indicate elevated COVID-19-related fear.