Table 2.

Post-COVID symptoms and functional limitations according to each cluster

	Cluster 0 (n = 432)	Cluster 1 (n = 696)	Cluster 2 (n = 841)	P-value
Number of post-COVID symptoms	2.9 ± 1.15	2.6 ± 1.05	0.75 ± 0.85	< 0.001
Fatigue	420 (97.2%)	599 (86.1%)	187 (22.25%)	< 0.001
Dyspnea at rest	317 (73.4%)	131 (18.8%)	11 (1.3%)	< 0.001
Dyspnea at exertion	398 (92.1%)	513 (73.7%)	143 (17.0%)	< 0.001
Musculoskeletal pain (including headache)	255 (59.0%)	429 (61.6%)	203 (24.15%)	< 0.001
Memory loss	99 (22.9%)	176 (25.3%)	66 (7.85%)	< 0.001
Cognitive Blurring-frain fog	62 (14.35%)	87 (12.5%)	40 (4.75%)	< 0.001
Concentration loss	42 (9.7%)	73 (10.5%)	25 (3.0%)	< 0.001
Hair loss	90 (20.8%)	274 (39.4%)	106 (12.6%)	< 0.001
Palpitations-tachycardia	50 (11.6%)	59 (8.5%)	31 (3.7%)	< 0.001
Skin rashes	53 (12.3%)	123 (17.7%)	60 (7.1%)	< 0.001
Gastrointestinal Problems	41 (9.5%)	59 (8.5%)	33 (3.9%)	0.002
Diarrhea	7 (1.6%)	31 (4.45%)	11 (1.3%)	0.002
Voice Problems	6 (1.4%)	23 (3.3%)	6 (0.7%)	0.006
Ageusia	7 (1.6%)	36 (5.2%)	10 (1.2%)	< 0.001
Anosmia	12 (2.8%)	36 (5.2%)	32 (3.8%)	0.270
Ocular problems	41 (9.5%)	60 (8.6%)	15 (1.8%)	< 0.001
Throat pain	6 (1.4%)	29 (4.2%)	15 (1.8%)	0.023
Limitation occupational Activities	244 (56.5%)	153 (22.0%)	21 (2.5%)	< 0.001
Limitation leisure/social activities	398 (92.1%)	186 (26.7%)	20 (2.4%)	< 0.001
Limitation basic daily life activities	351 (81.25%)	22 (3.15%)	16 (1.9%)	< 0.001
Limitation instrumental daily life activities	403 (93.3%)	116 (16.7%)	23 (2.7%)	< 0.001
FIC symptoms (0–12)	6.6 ± 3.25	3.25 ± 1.85	0.7 ± 1.2	< 0.001
FIC disability (0–12)	5.4 ± 2.7	0.9 ± 1.2	0.1 ± 0.5	< 0.001
HADS-A (0–21)	7.35 ± 5.7	5.9 ± 4.9	2.75 ± 4.45	< 0.001
HADS-D (0–21)	7.95 ± 5.35	5.45 ± 4.3	2.4 ± 3.65	< 0.001
Sleep quality (0–21)	8.35 ± 4.35	7.7 ± 3.9	4.55 ± 2.85	< 0.001

FIC, functional impairment checklist; HADS, Hospital Anxiety and Depression Scale (A: anxiety; D: depression)