Table 2 Factors associated with the use of a CRP test in relation to antibiotic prescribing
Model 1 | Model 2 | |||
|---|---|---|---|---|
Number (%) prescription with CRP test | Multivariable model for the four types of antibiotics recommended for RTIs | Number (%) prescription with CRP test | Multivariable model for the four types of antibiotics recommended for RTIs with RTI as stated indication | |
N = 984,149 | N = 487,939 | |||
Patient characteristics | n (%) | OR (95% CI) | n (%) | OR (95% CI) |
Overall | 335,755 (34.1) | 220,733 (45.2) | ||
Male | 142,507 (33.3) | 1 | 91,759 (45.2) | 1 |
Female | 193,248 (34.7) | 1.05 (1.04–1.06) | 128,974 (45.3) | 1.00 (0.98–1.01) |
18–44 | 125,436 (33.2) | 1 | 87,038 (42.6) | 1 |
45–64 | 108,825 (34.6) | 1.02 (1.00–1.03) | 69,245 (47.7) | 1.19 (1.17–1.22) |
65–74 | 58,595 (37.3) | 1.05 (1.01–1.08) | 37,339 (51.1) | 1.30 (1.24–1.35) |
75+ | 42,899 (31.7) | 0.82 (0.79–0.86) | 27,111 (41.5) | 0.91 (0.86–0.96) |
Education <10 years | 67,899 (33.1) | 1 | 44,292 (43.3) | 1 |
Education 10–15 years | 195,632 (34.4) | 1.05 (1.03–1.07) | 128,464 (45.6) | 1.10 (1.08–1.12) |
Education >15 years | 72,224 (34.4) | 1.04 (1.02–1.07) | 47,977 (46.1) | 1.13 (1.10–1.17) |
Working | 185,237 (34.6) | 1 | 124,386 (45.2) | 1 |
Pension | 100,956 (34.7) | 1.00 (0.98–1.03) | 64,294 (46.6) | 1.01 (0.97–1.05) |
Out of workforce or disability pension | 49,562 (31.3) | 0.84 (0.83–0.85) | 32,053 (43.0) | 0.90 (0.88–0.92) |
Single | 165,734 (32.8) | 1 | 109,632 (43.5) | 1 |
Married/Partner | 170,021 (35.5) | 1.08 (1.07–1.10) | 111,101 (47.1) | 1.07 (1.05–1.09) |
Danish | 303,038 (34.4) | 1 | 199,482 (45.5) | 1 |
Immigrant | 28,969 (32.2) | 0.91 (0.88–0.95) | 18,763 (43.4) | 0.92 (0.89–0.96) |
Descendant of immigrants | 3748 (31.0) | 0.90 (0.84–0.96) | 2488 (40.5) | 0.91 (0.84–0.98) |
Clinical characteristics | ||||
Charlson 0 | 274,552 (34.0) | 1 | 180,384 (45.5) | 1 |
Charlson 1 | 28,911 (36.6) | 1.07 (1.05–1.09) | 19,668 (44.7) | 0.92 (0.90–0.95) |
Charlson >1 | 32,292 (32.7) | 0.93 (0.91–0.95) | 20,681 (43.3) | 0.87 (0.84–0.90) |
No chronic conditions | 274,124 (33.3) | 1 | 180,549 (44.1) | 1 |
Chronic conditionsa | 61,631 (38.6) | 1.22 (1.18–1.26) | 40,184 (51.2) | 1.24 (1.19–1.29) |
0 contacts previous year | 36,709 (31.4) | 1 | 24,175 (42.0) | 1 |
1–4 contacts previous year | 162,103 (33.2) | 0.99 (0.98–1.01) | 107,685 (44.0) | 1.03 (1.01–1.05) |
> 4 contacts previous year | 136,943 (36.1) | 1.03 (1.00–1.05) | 88,873 (47.8) | 1.13 (1.10–1.17) |
0 antibiotic treatments previous year | 253,058 (34.3) | 1 | 165,331 (46.3) | 1 |
1 antibiotic treatment previous year | 61,385 (34.2) | 0.91 (0.90–0.93) | 40,834 (43.7) | 0.83 (0.82–0.85) |
> 1 antibiotic treatment previous year | 21,312 (31.6) | 0.75 (0.73–0.77) | 14,568 (39.2) | 0.64 (0.62–0.66) |
0 CRP previous year | 222,657 (31.7) | 1 | 146,070 (43.2) | 1 |
1 CRP previous year | 70,752 (38.1) | 1.33 (1.30–1.36) | 46,585 (48.3) | 1.23 (1.20–1.27) |
> 1 CRP previous year | 42,346 (44.2) | 1.78 (1.73–1.84) | 28,078 (53.0) | 1.58 (1.52–1.64) |
October–March | 210,163 (37.4) | 1 | 141,915 (46.0) | 1 |
April–September | 125,592 (29.8) | 0.71 (0.70–0.72) | 78,818 (44.0) | 0.93 (0.92–0.95) |