Table 1.
Baseline demographic and clinical characteristics between patients with positive (SPG) and negative (SNG) severe fever with thrombocytopenia syndrome reverse transcription polymerase chain reaction (RT-PCR).
| Variable | SPG (n = 62) | SNG (n = 138) | p-Value |
|---|---|---|---|
| Age (years) | 59.5 (±14.7) | 55.3 (±19.8) | 0.102 |
| Male gender | 35 (56.5) | 69 (50) | 0.398 |
| CCI | 0.3 (±0.6) | 0.85 (±1.1) | <0.001 |
| SFTS viral load, median (IQR) | 57,121 (3492–267,966) | N/A | |
| Exposure type | <0.001 | ||
| Agriculture | 24 (38.7) | 26 (18.8) | |
| Livestock | 7 (11.3) | 5 (3.6) | |
| Leisure activity | 8 (12.9) | 15 (10.9) | |
| Grave | 7 (11.3) | 2 (1.4) | |
| Gathering | 7 (11.3) | 7 (5.1) | |
| Patient contact | 5 (8.1) | 9 (6.5) | |
| Other | 4 (6.5) | 74 (38.4) | |
| Tick bite | 31(50.0) | 35 (25.4) | 0.001 |
| Geographical location | 0.105 | ||
| Northern | 12 (19.4) | 44 (31.9) | |
| North-eastern | 15 (24.2) | 23 (16.7) | |
| North-western | 11(17.7) | 14 (10.1) | |
| South | 5 (8.1) | 16 (11.6) | |
| South-eastern | 12 (19.4) | 21 (15.2) | |
| South-western | 7 (11.3) | 12 (8.7) | |
| Other | 0 (0) | 8 (5.8) | |
| Seasonal occurrence | <0.001 | ||
| Spring | 9 (14.5) | 16 (11.6) | |
| Summer | 37 (59.7) | 44 (31.9) | |
| Autumn | 16 (25.8) | 63 (45.7) | |
| Winter | 0 (0) | 15 (10.9) | |
| Climatic conditions | |||
| Ambient temperature (°C) | 22.5 (±4.2) | 18.9 (±5.7) | <0.001 |
| Humidity, (%) | 77.9 (±7.7) | 70.7 (±7.6) | <0.001 |
| Rainfall amount, (mmL) | 12.0 (±14.3) | 8.7 (±11.9) | 0.091 |
| Duration | |||
| From onset of illness to admission | 3.9 (±2.2) | 4.9 (±6.4) | 0.129 |
| 30-days mortality (%) | 11.3 | 6.5 | 0.339 |
| All-cause Mortality (%) | 11.3 | 8.0 | 0.448 |
p values are derived from a two sample t-test for continuous data and a chi-square test for categorical data. Continuous data are presented as means and standard deviations; categorical data are presented as counts and percentages. Abbreviation: CCI = comorbidity index score (calculated by the Charlson Comorbidity Index), IQR = interquartile range, N/A = not available.