TABLE 1.
Demographic characteristics and underlying conditions of patients.
| Characteristic | Enrolled ARI patients | RSV‐infected patients | Influenza‐infected patients | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Total | 2018–2019 | 2020–2021 | Total | 2018–2019 | 2020–2021 | Total | 2018–2019 | 2020–2021 | |
| (n = 5239) | (n = 3275) | (n = 1964) | (n = 634) | (n = 372) | (n = 262) | (n = 121) | (n = 94) | (n = 27) | |
| Age, month, median (IQR) | 12.0 (3.0–37.2) | 8.0 (2.6–31.1) | 19.0 (6.4–43.0) | 5.4 (2.4–15.3) | 4.2 (2.3–12.6) | 7.2 (2.7–18.0) | 29.1 (13.0–60.0) | 27.3 (13.1–52.0) | 37.0 (12.0–82.5) |
| Age group | |||||||||
| 0–1 month | 665 (12.7) | 516 (15.8) | 149 (7.6) | 109 (17.2) | 71 (19.1) | 38 (14.5) | 4 (3.3) | 3 (3.2) | 1 (3.7) |
| 2–3 months | 952 (18.2) | 714 (21.8) | 238 (12.1) | 169 (26.7) | 112 (30.1) | 57 (21.8) | 9 (7.4) | 7 (7.4) | 2 (7.4) |
| 4–5 months | 317 (6.1) | 231 (7.1) | 86 (4.4) | 56 (8.8) | 36 (9.7) | 20 (7.6) | 1 (0.8) | 1 (1.1) | 0 (0) |
| 6–11 months | 689 (13.2) | 430 (13.1) | 259 (13.2) | 92 (14.5) | 55 (14.8) | 37 (14.1) | 16 (13.2) | 12 (12.8) | 4 (14.8) |
| 12–23 months | 791 (15.1) | 433 (13.2) | 358 (18.2) | 117 (18.5) | 55 (14.8) | 62 (23.7) | 23 (19.0) | 21 (22.3) | 2 (7.4) |
| 24–59 months | 1282 (24.5) | 664 (20.3) | 618 (31.5) | 85 (13.4) | 38 (10.2) | 47 (17.9) | 37 (30.6) | 31 (33.0) | 6 (22.2) |
| ≥5 years | 543 (10.4) | 287 (8.8) | 256 (13.0) | 6 (0.9) | 5 (1.3) | 1 (0.4) | 31 (25.6) | 19 (20.2) | 12 (44.4) |
| Male sex | 3136 (59.9) | 1982 (60.5) | 1154 (58.8) | 380 (59.9) | 227 (61.0) | 153 (58.4) | 71 (58.7) | 51 (54.3) | 20 (74.1) |
| Residence | |||||||||
| Zhengzhou City | 3571 (68.2) | 2066 (63.1) | 1505 (76.6) | 457 (72.1) | 242 (65.1) | 215 (82.1) | 76 (62.8) | 55 (58.5) | 21 (77.8) |
| Outside Zhengzhou City in Henan Province | 1583 (30.2) | 1144 (34.9) | 439 (22.4) | 166 (26.2) | 123 (33.1) | 43 (16.4) | 41 (33.9) | 35 (37.2) | 6 (22.2) |
| Outside Henan Province | 83 (1.6) | 63 (1.9) | 20 (1.0) | 10 (1.6) | 6 (1.6) | 4 (1.5) | 3 (2.5) | 3 (3.2) | 0 (0) |
| Missing data a | 2 (0.0) | 2 (0.1) | 0 (0) | 1 (0.2) | 1 (0.3) | 0 (0) | 1 (0.8) | 1 (1.1) | 0 (0) |
| Underlying conditions | |||||||||
| Yes | 606 (11.6) | 451 (13.8) | 155 (7.9) | 68 (10.7) | 48 (12.9) | 20 (7.6) | 15 (12.4) | 13 (13.8) | 2 (7.4) |
| No | 4633 (88.4) | 2824 (86.2) | 1809 (92.1) | 566 (89.3) | 324 (87.1) | 242 (92.4) | 106 (87.6) | 81 (86.2) | 25 (92.6) |
Note: Figures are numbers (%) unless stated otherwise. Characteristics were compared in ARI or RSV/influenza positive patients between 2018–2019 and 2020–2021.
Abbreviations: ARI, acute respiratory infections; IQR, interquartile range; RSV, respiratory syncytial virus.
a
Inpatients' addresses were unfilled.