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Table 2 Demographic characteristics associated with all donations by center between 2000 and 2010

From: Prevalence and prevalence trends of transfusion transmissible infections among blood donors at four chinese regional blood centers between 2000 and 2010

  Liaoning Guangzhou Nanjing Yancheng Overall
Number of donors 774570 2466834 683704 442259 4366283
Male 460052 (59.5) 1510573 (61.2) 379270 (55.5) 258048 (58.3) 2605938 (59.7)
Female 314118 (40.5) 956261 (38.8) 304434 (44.5) 184211 (41.7) 1759955 (40.3)
Age group(years)      
18- < 25 355140 (45.9) 1329575 (53.9) 417408 (61.1) 52600 (11.9) 2154555 (49.4)
25- < 35 200156 (25.9) 706815 (28.7) 145686 (21.2) 105191 (23.8) 1157829 (26.5)
35- < 45 157551 (20.3) 325483 (13.2) 87383 (12.8) 142688 (32.2) 713108 (16.3)
45- < 55 59778 (7.8) 104961 (4.2) 33224 (4.9) 141780 (32.1) 340451 (7.8)
Marriage status      
Single 388339 (50.2) 1680942 (68.1) * 175809 (25.7) 124645 (28.2) 2369735 (54.3)
Married 364818 (47.0) 769425 (31.2) * 69534 (10.2) 256732 (58.1) 1460509 (33.4)
Missing 21413 (2.8) 16467 (0.7) 418361 (61.2) 60882 (13.7) 517123 (11.8)
Occupation      
Student 358804 (46.3) 510756 (20.7) 148330 (21.7) 33718 (7.6) 1051608 (24.1)
Employed,self-employed, retired 246006 (31.8) 880990 (35.7) 289239 (42.3) 151864 (34.3) 1568099 (35.9)
Other 168676 (21.8) 1065088 (43.2) 18571 (2.7) 249817 (56.5) 1502152 (34.4)
Missing 1084 (0.1) 10000 (0.4) 227564 (33.3) 6860 (1.6) 245508 (5.6)
Education      
Below high school 139787 (18.1) 615813 (25.0) * 17944 (5.5) 31869 (7.2) 805413 (20.1)
High school 108660 (14.1) 585030 (23.7) * 19618 (6.0) 107847 (24.4) 821155 (20.5)
Some college 130250 (16.8) 543266 (22.0) * 59781 (18.4) 119207 (27.0) 852504 (21.3)
College degree and above 101880 (13.2) 722725 (29.3) * 92389 (28.4) 69295 (15.7) 986289 (24.6)
Other 292909 (37.8)   135353 (41.6) 114040 (25.7) 542302 (13.5)
Donor status      
first-time donor 459551 (59.3) 1665940 (67.5) 482211 (70.5) 156010 (35.3) 2763712 (63.3)
Repeat 313935 (40.7) 800894 (32.5) 201493 (29.5) 286249 (64.7) 1602571 (36.7)
Donation site: collection vehicle 426683 (55.1) 1020364 (41.4) 472788 (69.2) 413801 (93.6) 2333636 (53.4)
  1. Data are shown as number (%).
  2. * these data was from 2006–2010.