Table 1 Number of contacts by demographic characteristics, occupations, and locations
From: Patterns of human social contact and mask wearing in high-risk groups in China
Characteristics | Number of participants n (%) | Individual contacts Mean (95% CI) | Group contacts Mean (95% CI) | Total contacts Mean (95% CI) | |
|---|---|---|---|---|---|
Overall |  | 15,635 | 3.14 (3.13–3.15) | 37.90 (37.20–38.70) | 41.10 (40.37–41.83) |
Sex | Male | 8066 (51.6) | 3.14 (3.13–3.15) | 39.72 (38.63–40.81) | 42.85 (41.76–43.94) |
Female | 7569 (48.4) | 3.14 (3.13–3.15) | 36.09 (35.13–37.06) | 39.23 (38.27–40.20) | |
Age | [0, 5] | 2844 (18.2) | 3.20 (3.17–3.23) | 53.39 (49.70–57.08) | 56.59 (52.90–60.28) |
[5, 10] | 4314 (27.6) | 3.17 (3.14–3.19) | 54.78 (50.83–58.73) | 57.95 (54.00–61.90) | |
[10, 15] | 3842 (24.6) | 3.18 (3.14–3.22) | 55.21 (49.47–60.95) | 58.39 (52.65–64.13) | |
[15, 20] | 1269 (8.1) | 3.13 (3.11–3.15) | 39.27 (36.99–41.54) | 42.40 (40.12–44.67) | |
[20, 30] | 1356 (8.7) | 3.20 (3.13–3.28) | 48.45 (39.23–57.67) | 51.65 (42.42–60.88) | |
[30, 40] | 1240 (7.9) | 3.10 (3.09–3.11) | 33.06 (32.11–34.02) | 36.16 (35.20–37.12) | |
[40, 50] | 589 (3.8) | 3.15 (3.13–3.16) | 25.16 (24.19–26.13) | 28.30 (27.33–29.27) | |
50 +  | 181 (1.2) | 3.14 (3.12–3.15) | 38.50 (37.10–39.91) | 41.64 (40.23–43.05) | |
Occupation | Delivery workers | 1491 (9.5) | 3.13 (3.11–3.15) | 62.82 (58.76–66.87) | 65.95 (61.89–70.01) |
Medical workers | 1904 (12.2) | 3.22 (3.20–3.25) | 47.19 (44.50–49.87) | 50.41 (47.73–53.10) | |
Preschoolers | 4616 (29.5) | 3.13 (3.12–3.15) | 25.74 (24.99–26.50) | 28.88 (28.12–29.63) | |
Students | 7624 (48.8) | 3.12 (3.11–3.13) | 38.20 (37.28–39.12) | 41.32 (40.40–42.24) | |
Household income per capita, CNY | < 10,000 | 4744 (30.3) | 3.15 (3.13–3.16) | 41.20 (39.35–43.04) | 44.34 (42.50–46.18) |
10,000–29,999 | 2910 (18.6) | 3.13 (3.12–3.15) | 38.75 (37.00–40.50) | 41.88 (40.13–43.64) | |
30,000–49,999 | 2464 (15.8) | 3.12 (3.11–3.13) | 36.96 (35.58–38.34) | 40.08 (38.70–41.46) | |
50,000–99,999 | 2907 (18.6) | 3.14 (3.13–3.16) | 37.32 (35.69–38.94) | 40.46 (38.83–42.09) | |
≥ 100,000 | 2610 (16.7) | 3.16 (3.14–3.18) | 36.16 (34.54–37.79) | 39.32 (37.70–40.95) | |
Household size | 1–2 | 5695 (36.4) | 3.14 (3.12–3.15) | 40.77 (39.40–42.14) | 43.91 (42.54–45.28) |
3–4 | 7440 (47.6) | 3.13 (3.12–3.14) | 36.30 (35.34–37.27) | 39.43 (38.47–40.40) | |
≥ 5 | 2500 (16.0) | 3.16 (3.14–3.18) | 36.50 (34.81–38.20) | 39.66 (37.96–41.36) | |
Province | Qinghai | 8437 (54.0) | 3.14 (3.12–3.15) | 44.70 (42.48–46.93) | 47.84 (45.62–50.07) |
Shanghai | 2978 (19.0) | 3.12 (3.11–3.13) | 35.33 (34.48–36.19) | 38.46 (37.60–39.31) | |
Zhejiang | 4220 (27.0) | 3.17 (3.15–3.18) | 38.46 (37.07–39.85) | 41.62 (40.24–43.01) | |