Table 2 Characteristics of Participants in Different Groups (n = 557)
From: Factors affecting the immunogenicity of influenza vaccines in human
Variable | Category | Frequency/Mean/Median | Percentage/ Standard Deviation/ (P25, P75) |
|---|---|---|---|
Gender | Male | 219 | 39.3% |
| Â | Female | 338 | 60.7% |
Age Group | ≤ 5 | 141 | 25.3% |
|  | 6–17 | 36 | 6.5% |
|  | 18–64 | 226 | 40.6% |
|  | ≥ 65 | 154 | 27.6% |
Region | Yunnan | 239 | 42.9% |
| Â | Xinjiang | 96 | 17.2% |
| Â | Shaanxi | 222 | 39.9% |
Frequency of Colds | ≤ 1 | 52 | 11.3% |
|  | 2–3 | 308 | 67.1% |
|  | 4–6 | 79 | 17.2% |
| Â | >6 | 20 | 4.4% |
Vaccination History | No | 370 | 67.4% |
| Â | Yes | 179 | 32.6% |
BMI Group | < 18.5 | 170 | 30.7% |
|  | 18.5–23.9 | 188 | 34.0% |
| Â | 24-27.9 | 132 | 23.9% |
|  | ≥ 28 | 63 | 11.4% |
Smoking | No | 442 | 85.8% |
| Â | Yes | 73 | 14.2% |
Alcohol Drinking | No | 420 | 81.9% |
| Â | Yes | 93 | 18.1% |
Chronic Diseases | No | 422 | 76.6% |
| Â | Yes | 129 | 23.4% |
Vaccine Type | TIV | 393 | 70.6% |
| Â | QIV | 164 | 29.4% |
Seroconversion for A/H1N1 | No | 239 | 42.9% |
| Â | Yes | 318 | 57.1% |
Seroconversion for A/H3N2 | No | 166 | 41.4% |
| Â | Yes | 235 | 58.6% |
Seroconversion for B/Victoria | No | 239 | 43.0% |
| Â | Yes | 317 | 57.0% |
Seroconversion for B/Yamagata | No | 42 | 47.7% |
| Â | Yes | 46 | 52.3% |
Response status | Low Responder | 71 | 12.7% |
| Â | Responder | 135 | 24.2% |
| Â | Neither | 351 | 63.1% |
Age | - | 40.4 | 28.6 |
Height/cm | - | 144.3 | 28.0 |
Weight/kg | - | 49.1 | 23.0 |
BMI | - | 21.5 | 4.8 |
The fold change for A/H1N1 | - | 1.47 | 1.00-2.72 |
The fold change for A/H3N2 | - | 1.60 | 1.23–2.20 |
The fold change for B/Victoria | - | 1.60 | 1.00-2.72 |
The fold change for B/Yamagata | - | 1.38 | 1.00-1.92 |