Table 3 Age-specific 30-day incidence of different symptoms or symptom groups and corresponding proportion of healthcare seeking (HS) in Hong Kong, February 2014 to May 2015 (N = 3253)
0-15y (n = 285) | 16-54y (n = 2661) | ≥55y (n = 305) | |||||
|---|---|---|---|---|---|---|---|
Symptom | No. episodes (30-day incidence rate, %) | HS%b (95% CI) | No. episodes (30-day incidence rate, %) | HS% (95% CI) | No. episodes (30-day incidence rate, %) | HS% (95% CI) | p-valuea |
Fever | 56 (5.5) | 77.6 (68.1, 87.1) | 186 (1.8) | 68.6 (60.6, 76.5) | 17 (1.4) | 98.1 (94.6, 100) | < 0.001 |
Rash | 12 (1.1) | 49.8 (24.5, 75.0) | 13 (0.1) | 74.2 (47.7, 100) | 0 (0) | – | 0.405 |
Shortness of breath | 7 (0.6) | 72.3 (45.8, 98.8) | 77 (0.7) | 51.7 (35.0, 68.4) | 8 (0.7) | 64.0 (46.7, 81.4) | 0.383 |
Eye-relatedc | 8 (0.7) | 38.0 (11.1, 64.9) | 57 (0.5) | 34.4 (20.0, 48.8) | 7 (0.6) | 82.5 (68.0, 96.9) | 0.362 |
Diarrhoea | 19 (1.7) | 53.2 (34.3, 72.1) | 174 (1.7) | 47.3 (38.2, 56.5) | 9 (0.7) | 52.1 (24.6, 79.6) | 0.301 |
Vomiting | 14 (1.3) | 59.2 (36.6, 81.7) | 106 (1.0) | 50.6 (38.4, 62.8) | 9 (0.7) | 36.9 (21.5, 52.3) | 0.318 |
Cough | 88 (9.5) | 51.2 (42.8, 59.7) | 508 (5.4) | 45.4 (39.8, 51.0) | 47 (4.2) | 45.0 (37.0, 53.1) | < 0.001 |
Runny Nose | 106 (11.9) | 52.2 (43.9, 60.5) | 685 (7.6) | 39.8 (35.0, 44.6) | 55 (4.9) | 52.1 (41.8, 62.4) | < 0.001 |
Sore throat | 30 (2.8) | 40.9 (27.8, 54.1) | 479 (5.1) | 38.4 (33.1, 43.8) | 31 (2.7) | 70.4 (59.5, 81.4) | < 0.001 |
Headache | 13 (1.2) | 3.7 (0, 11.1) | 765 (8.6) | 31.6 (26.8, 36.4) | 84 (7.9) | 44.0 (35.6, 52.4) | 0.002 |
Dizziness | 4 (0.4) | 12.4 (0, 36.2) | 390 (4.0) | 32.3 (26.2, 38.4) | 41 (3.6) | 39.5 (28.3, 50.7) | 0.419 |
Chills | 7 (0.6) | 52.3 (20.8, 83.7) | 203 (2.0) | 35.2 (27.1, 43.4) | 17 (1.4) | 17.8 (0, 35.7) | 0.017 |
Abdominal pain | 6 (0.5) | 35.1 (8.6, 61.6) | 144 (1.4) | 32.0 (21.9, 42.0) | 11 (0.9) | 26.6 (13.1, 40.1) | 0.038 |
Nausea | 2 (0.2) | 39.5 (1.3, 98.7) | 127 (1.2) | 31.2 (20.1, 42.2) | 14 (1.2) | 27.9 (0, 63.6) | 0.524 |
Loss of appetite | 31 (2.9) | 25.6 (13.4, 37.7) | 176 (1.7) | 27.7 (19.6, 35.8) | 24 (2.0) | 28.6 (4.2, 53.1) | 0.001 |
Low back pain | 3 (0.3) | 41.0 (0.8, 90.6) | 559 (5.9) | 20.3 (15.7, 24.8) | 62 (5.5) | 30.1 (22.0, 38.2) | 0.034 |
Myalgia | 7 (0.6) | 22.2 (0, 49.0) | 499 (5.3) | 21.5 (16.9, 26.2) | 45 (4.0) | 9.5 (3.7, 15.3) | 0.230 |
Fatigue | 30 (2.8) | 6.5 (0, 13.8) | 874 (10.0) | 15.4 (11.9, 19.0) | 84 (7.9) | 12.2 (6.4, 17.9) | < 0.001 |
ILI | 35 (3.3) | 91.7 (84.3, 99.1) | 62 (0.6) | 84.0 (74.6, 93.4) | 7 (0.6) | 100 (59.0, 100) | 0.106 |
ARI | 93 (10.0) | 75.4 (68.3, 82.4) | 648 (7.1) | 57.4 (52.6, 62.3) | 64 (5.9) | 72.6 (65.1, 80.2) | < 0.001 |
Any symptoms | 151 (20.4) | 69.9 (63.4, 76.4) | 2180 (46.5) | 33.2 (30.2, 36.2) | 233 (30.6) | 44.9 (39.3, 50.5) | < 0.001 |