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Table 1 Epidemiological features of HFMD in Beijing, China, 2009–2014

From: Detecting spatial-temporal cluster of hand foot and mouth disease in Beijing, China, 2009-2014

  2009 (n = 24,483) 2010 (n = 45,409) 2011 (n = 30,843) 2012 (n = 38,528) 2013 (n = 33,763) 2014 (n = 47,425)
Cases (%) Incidence (1/10,000) Cases (%) Incidence (1/10,000) Cases (%) Incidence (1/10,000) Cases (%) Incidence (1/10,000) Cases (%) Incidence (1/10,000) Cases (%) Incidence (1/10,000)
Age group
 0- 1530 (6) 94.52 2626 (6) 157.09 1593 (5) 158.56 2055 (5) 172.59 2735 (8) 225.05 1759 (4) 107.50
 1- 2801 (12) 170.60 9661 (21) 566.58 6203 (20) 602.70 7466 (20) 483.01 8525 (25) 536.01 9725 (21) 777.83
 2- 6390 (26) 397.23 10,216 (23) 606.90 6573 (21) 652.70 7437 (19) 484.64 5839 (17) 366.65 9052 (19) 547.16
 3- 5883 (24) 387.97 10,209 (23) 637.89 7435 (24) 776.58 8610 (22) 586.46 6285 (19) 409.21 9954 (21) 634.32
 4- 3906 (16) 268.95 6033 (13) 391.30 4580 (15) 509.00 6147 (16) 432.54 4473 (13) 299.71 7248 (15) 475.25
 5- 2031 (8) 144.32 3192 (7) 213.44 2068 (7) 237.79 3163 (8) 339.64 2466 (7) 253.45 4214 (9) 425.28
 6- 1304 (5) 20.44 2294 (5) 32.45 1572 (5) 39.86 2648 (7) 57.42 2052 (6) 39.78 4004 (8) 75.71
 10- 369 (2) 3.05 614 (1) 5.02 449 (2) 6.88 520 (2) 10.36 573 (2) 11.47 687 (1) 13.52
 15- 269 (1) 0.19 564 (1) 0.38 370 (1) 0.21 482 (1) 0.26 815 (3) 0.43 782 (2) 0.41
Gender
 Male 14,826 (61) 17.37 27,373 (60) 30.98 18,474 (60) 18.27 23,079 (60) 22.18 20,392 (60) 19.09 27,985 (59) 25.66
 Female 9657 (39) 11.48 18,036 (40) 20.70 12,369 (40) 13.02 15,449 (40) 15.80 13,371 (40) 13.35 19,440 (41) 18.98
 Gender ratio 1.54:1 1.52:1 1.49:1 1.49:1 1.53:1 1.44:1
Occupation
 Scattered childrena 13,552 (55) 278.32 23,474 (52) 463.87 15,563 (50) 511.75 19,840 (51) 464.53 19,198 (57) 436.49 23,694 (50) 521.79
 Kindergarten childrena 9597 (39) 219.31 19,330 (42) 416.80 13,511 (44) 495.47 16,090 (42) 421.14 11,967 (35) 299.08 19,971 (42) 488.86
 Studentsa 1133 (5) 6.14 2184 (5) 11.32 1486 (5) 14.19 2220 (6) 23.05 1934 (6) 19.04 3107 (7) 29.96
 Other 201 (1) 0.14 421 (1) 0.29 283 (1) 0.16 378 (1) 0.21 664 (2) 0.35 653 (1) 0.34
  1. In occupation, a, Children under 3, 3–6, and 6–14 years old are defined as scattered children, kindergarten children and students respectively. Therefore, the incidence rates of those children are calculated as the number of cases divided by the population of corresponding age group