Table 1.
Demographics of serum sample donors.
| Area | Gender | Count (% of total) |
Total | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Age (year): | 0.2–0.5 | 0.6–3.0 | 3.1–7.0 | 7.1–14 | 18–30 | 31–40 | 41–50 | 51–65 | 66–83 | |||
| Xining | Male | 54 (10.2) | 18 (3.4) | 13 (2.5) | 15 (2.8) | 1 (0.2) | 101 (19.2) | |||||
| Female | 52 (9.9) | 22 (4.2) | 36 (6.8) | 11 (2.1) | 4 (0.8) | 125 (23.7) | ||||||
| Chengxi | Male | 4 (0.8) | 32 (6.1) | 47 (8.9) | 18 (3.4) | 101 (19.2) | ||||||
| Female | 0 (0.0) | 28 (5.3) | 26 (4.9) | 12 (2.3) | 66 (12.5) | |||||||
| Guinan (town) | Male | 0 (0.0) | 20 (3.8) | 19 (3.6) | 39 (7.4) | |||||||
| Female | 0 (0.0) | 14 (2.7) | 21 (4.0) | 35 (6.6) | ||||||||
| Guinan (village) | Male | 1 (0.2) | 19 (3.6) | 14 (2.7) | 34 (6.5) | |||||||
| Female | 1 (0.2) | 13 (2.5) | 12 (2.3) | 26 (4.9) | ||||||||
| Total | 6 (1.1) | 126 (23.9) | 139 (26.4) | 30 (5.7) | 106 (20.1) | 40 (7.6) | 49 (9.3) | 26 (4.9) | 5 (0.9) | 527 (100.0) | ||