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Table 1 Incidence of bloodstream infection (BSI) stratified by sex in an area of Mid-Norway 2002-2013. Number of episodes and observed and standardized incidence rates, allover and in various subgroups, are shown

From: Burden of bloodstream infection in an area of Mid-Norway 2002-2013: a prospective population-based observational study

  Total Females Males
Group of BSI n Observed BSI
ratea
(95% C.I.)
Age and sex standar- dized rateb n Observed BSI
ratea
(95% CI)
Age standar-dized rate c n Observed BSI ratea
(95% CI)
Age standar-dizedrate d
All BSIs 1995 232 (222–242) 215 961 221 (208–236) 209 1034 242 (228–258) 222
Agee
 16–64 years 578 84 (78–92) 82 284 84 (75–94) 83 294 84 (75–95) 82
 65–79 years 692 564 (523–607) 555 306 477 (425–534) 473 386 658 (594–727) 646
 ≥80 years 725 1379 (1280–1483) 1373 371 1122 (1011–1242) 1126 354 1813 (1629–2012) 1826
Place of acquisition
 CA-BSI 934 109 (102–116) 102 502 116 (106–126) 110 432 101 (92–111) 94
 HCA-BSI 787 91 (85–98) 85 356 82 (74–91) 78 431 101 (92–111) 91
 HA-BSI 274 32 (28–36) 30 103 24 (19–29) 23 171 40 (34–47) 37
Infection focus
 Urinary tract 752 87 (81–94) 81 429 99 (90–109) 94 323 76 (68–84) 68
 Lungs 331 38 (34–43) 36 142 33 (28–39) 31 189 44 (38–51) 41
 Biliary tract 220 26 (22–29) 24 93 21 (17–26) 21 127 30 (25–35) 27
 Gastrointestinal tract 101 12 (10–14) 11 44 10 (7–14) 9.8 57 13 (10–17) 13
 Skin or soft tissue 143 17 (14–20) 16 61 14 (11–18) 13 82 19 (15–24) 18
 Other 247 29 (25–33) 27 104 24 (20–29) 23 143 34 (28–39) 31
 Unknown 201 23 (20–27) 22 88 20 (16–25) 19 113 26 (22–32) 24
Microbe group
 Gram-negative BSI 1133 132 (124–140) 123 616 142 (131–154) 135 517 121 (111–132) 110
 Gram-positive BSI 777 90 (84 to 97) 85 310 71 (64–80) 68 467 109 (100–120) 101
 Polymicrobial or fungal BSI 85 10 (8–12) 9 35 8 (6–11) 8 50 12 (8–15) 11
Microbes (the four most common)
Escherichia coli 686 80 (74–86) 74 421 97 (88–107) 93 265 62 (55–70) 56
Streptococcus pneumoniae 226 26 (23–30) 25 109 25 (21–30) 24 117 27 (23–33) 25
Staphylococcus aureus 218 25 (22–29) 24 75 17 (14–22) 16 143 34 (28–39) 31
Klebsiella spp. 134 16 (13–18) 14 65 15 (12–19) 14 69 16 (13–20) 15
  1. aBSI episodes per 100,000 person-years (totally 860,630 person-years in individuals ≥16 years, 426, 517 in males, 434,113 in females)
  2. bmales and females standardized to the age distribution of the male and female population of Norway 2010, respectively
  3. cstandardized to the age distribution of females in Norway 2010
  4. dstandardized to the age distribution of males in Norway 2010
  5. ePerson-years in the three age groups were: 16–64 years: males 348,342; females 336,950; 65–79 years: males 58,645; females 64,100; ≥80 years: males 19,530; females 33,063