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
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 |