Characteristics  SPP, crude  SPP, adjusted  COVID-19
Weeks 3–5, 2015–19  Weeks 3–5, 2015–19  20 days  28 days  31 days  26 days  22 days  30 days  17 days  23 days
Wuhan [5]  Wuhan [6]  Wuhan [7]  Hubei [10]  Beijing [8]  Shenzhen [9]  Zhejiang [11]  Zhejiang [12]
Number  5,829  NA  99  138  82  137  262  298  62  91
Mean age in years (range)  73 (71–75)  63 (61–66)  55.5  NA  NA  55  NA   NA   NA   NA
Median age in years (range)  77 (76–78)  67 (65–69)   NA  56   NA  57  47.5  47  41  50
Female, % (range)  45 (44–45)  41 (39–42)  32  46   NA  56  52  50  44  59
Any chronic disease, % (range)  82 (80–85)  74 (70–77)  51  46   NA  20   NA  32  32   NA
Hypertension, % (range)  58 (56–62)  49 (46–53)   NA  31   NA  10   NA  13  8  16
Endocrine condition/diabetes, % (range)  28 (26–30)  24 (22–26)  13  14   NA  10   NA  6  2  9
COPD, % (range)  20 (19–22)  20 (18–22)   NA  3   NA  2   NA   NA  2   NA
Cancer, % (range)  7 (6–8)  8 (7–9)  1  7   NA  2   NA  1   NA   NA
Renal disease, % (range)  37 (34–40)  27 (24–29)   NA  3   NA   NA   NA   NA  2   NA
Liver disease, % (range)  4 (3–4)  5 (3–6)   NA  3   NA   NA   NA  3  11   NA
Of total: ARDS, % (range)  1 (0–1)  1 (0–1)  17  20   NA   NA   NA  4  2   NA
Of total: ventilated, % (range)  8 (7–10)  9 (8–11)  20  23   NA  25   NA  11  2   NA
Of total: ICU, % (range)  19 (18–21)  20 (18–22)  23  26   NA   NA   NA  11  2  10
Of ICU: male, % (range)  58 (55–60)  61 (56–66)   NA  61   NA   NA   NA   NA   NA   NA
Of ICU: median age in years (range)  76 (74–78)  67 (64–68)   NA  66   NA   NA   NA   NA   NA   NA
Of ICU: without chronic, % (range)  10 (7–12)  16 (10–19)   NA  28   NA   NA   NA   NA   NA   NA
Of total: deceased, % (range)  9 (8–9)  6 (5–6)  11  4  6  12  1  0  0  0
Of deceased: median age, in years (range)  83 (82–84)  78 (76–79)   NA  NA  72.5   NA   NA   NA   NA   NA
Of deceased: < 60 years, % (range)  5 (2–9)  13 (7–22)  36   NA  20   NA  30   NA   NA   NA
Of deceased: without chronic disease, % (range)  13 (13–15)  13 (12–14)  18   NA  23   NA  30   NA   NA   NA
Still hospitalised, %  58  62  NA  56  82  77  98  66