Background
Methods
Data source and patient population
Covariates
PSM method
T2DM | 2001–2003 | 2004–2006 | 2007–2009 | 2010–2012 | 2013–2015 | Total | Trend | |
---|---|---|---|---|---|---|---|---|
Number of endocarditis | Yes | 345 | 486 | 603 | 962 | 1040 | 3436 | < 0.001 |
No | 2019 | 2128 | 2304 | 3165 | 3574 | 13,190 | < 0.001 | |
Incidence per 100,000 per year* | Yes | 6.0 | 7.8 | 8.9 | 12.8 | 13.1 | 10.0 | < 0.001 |
No | 3.9 | 3.8 | 3.8 | 5.1 | 5.5 | 4.5 | < 0.001 | |
Age, mean (SD)* | Yes | 68.7 (9.8) | 69.2 (9.9) | 70.4 (9.9) | 71.6 (10.2) | 71.8 (10.3) | 70.8 (10.2) | < 0.001 |
No | 66.2 (12.1) | 66.0 (12.3) | 67.4 (12.5) | 69.0 (12.2) | 69.4 (12.4) | 67.9 (12.4) | < 0.001 | |
Female sex, n (%) | Yes | 130 (37.7) | 193 (39.7) | 233 (38.6) | 348 (36.2) | 336 (32.3) | 1240 (36.1) | 0.023 |
No | 667 (33.0) | 704 (33.1) | 786 (34.1) | 1037 (32.8) | 1131 (31.7) | 4325 (32.8) | 0.393 | |
Charlson Comorbidity Index, mean (SD)* | Yes | 1.0 (0.8) | 1.0 (0.8) | 1.0 (0.8) | 1.1 (0.8) | 1.1 (0.8) | 1.1 (0.8) | < 0.001 |
No | 0.8 (0.8) | 0.8 (0.8) | 0.9 (0.8) | 1.0 (0.8) | 1.0 (0.8) | 0.9 (0.8) | < 0.001 | |
Prosthetic valve carriers, n (%) | Yes | 27 (7.8) | 41 (8.4) | 57 (9.5) | 106 (11.0) | 102 (9.8) | 333 (9.7) | 0.375 |
No | 170 (8.4) | 191 (9.0) | 205 (8.9) | 294 (9.3) | 360 (10.1) | 1220 (9.3) | 0.280 | |
Previous mitral valve disease, n (%)* | Yes | 99 (28.7) | 122 (25.1) | 156 (25.9) | 271 (28.2) | 264 (25.4) | 912 (26.5) | 0.478 |
No | 540 (26.8) | 616 (29.0) | 681 (29.6) | 1034 (32.7) | 1100 (30.8) | 3971 (30.1) | < 0.001 | |
Previous aortic valve disease, n (%)* | Yes | 75 (21.7) | 114 (23.5) | 149 (24.7) | 251 (26.1) | 280 (26.9) | 869 (25.3) | 0.280 |
No | 511 (25.3) | 602 (28.3) | 673 (29.2) | 972 (30.7) | 1122 (31.4) | 3880 (29.4) | < 0.001 | |
Readmissions, n (%)* | Yes | 58 (16.8) | 91 (18.7) | 116 (19.2) | 199 (20.7) | 223 (21.4) | 687 (20.0) | 0.338 |
No | 300 (14.9) | 314 (14.8) | 354 (15.4) | 526 (16.6) | 597 (16.7) | 2091 (15.9) | 0.128 | |
Length of hospital stay, mean (SD) | Yes | 28.24 (20.9) | 28.9 (21.4) | 28.48 (20.4) | 27.69 (21.0) | 24.76 (18.9) | 27.17 (20.4) | < 0.001 |
No | 28.33 (22.6) | 27.87 (21.8) | 28.25 (22.4) | 27.18 (22.4) | 26.66 (21.4) | 27.51 (22.1) | 0.018 | |
In-hospital mortality, n (%) | Yes | 87 (25.2) | 101 (20.8) | 135 (22.4) | 209 (21.7) | 182 (17.5) | 714 (20.8) | 0.015 |
No | 431 (21.4) | 397 (18.7) | 439 (19.1) | 638 (20.2) | 657 (18.4) | 2562 (19.4) | 0.053 | |
Costs, mean (SD)* | Yes | 9137.6 (5486) | 12,380.7 (8116.2) | 14,928.4 (8646.3) | 13,507.4 (11,465.3) | 13,744.5 (10,822.8) | 13,230.4 (10,000.7) | < 0.001 |
No | 10,171.7 (7450.2) | 12,746.6 (8463.6) | 16,366.4 (11,276.8) | 16,588.5 (17,974.3) | 14,759.3 (12,184.5) | 14,452.0 (12,845.6) | < 0.001 |
Statistical analysis
Ethical aspects
Results
Overall incidence of infective endocarditis and according to T2DM status
Clinical characteristics and in-hospital outcomes of patients hospitalized with infective endocarditis according to T2DM status
Distribution of study covariates and IHM among patients with and without T2DM hospitalized with infective endocarditis in Spain
Before matching | After matching | |||||
---|---|---|---|---|---|---|
T2DM | Non T2DM | p value | T2DM | Non T2DM | p value | |
Time period, n (%) | ||||||
2001–2003 | 345 (10.0) | 2019 (15.3) | < 0.001 | 345 (10.0) | 371 (10.8) | 0.277 |
2004–2006 | 486 (14.1) | 2128 (16.1) | 486 (14.1) | 456 (13.3) | ||
2007–2009 | 603 (17.6) | 2304 (17.5) | 603 (17.6) | 576 (16.8) | ||
2010–2012 | 962 (28.0) | 3165 (24.0) | 962 (28.0) | 928 (27.0) | ||
2013–2015 | 1040 (30.3) | 3574 (27.1) | 1040 (30.3) | 1105 (32.2) | ||
Total | 3436 (100) | 13,190 (100) | 3436 (100) | 3436 (100) | ||
Sex, n (%) | ||||||
Male | 2196 (63.9) | 8865 (67.2) | < 0.001 | 2196 (63.9) | 2175 (63.3) | 0.599 |
Female | 1240 (36.1) | 4325 (32.8) | 1240 (36.1) | 1261 (36.7) | ||
Age, mean (SD) | 70.8 (10.2) | 67.9 (12.4) | < 0.001 | 70.8 (10.2) | 70.3 (11.8) | 0.154 |
Age groups, n (%) | ||||||
40–66 years old | 1030 (30.0) | 5437 (41.2) | < 0.001 | 1030 (30.0) | 1067 (31.1) | 0.001 |
67–75 years old | 1153 (33.6) | 3547 (26.9) | 1153 (33.6) | 1014 (29.5) | ||
≥ 76 years old | 1253 (36.5) | 4206 (31.9) | 1253 (36.5) | 1355 (39.4) | ||
CCI, mean (SD) | 1.1 (0.8) | 0.9 (0.8) | < 0.001 | 1.1 (0.8) | 1.1 (0.8) | 0.673 |
Prosthetic valve carriers, n (%) | 333 (9.7) | 1220 (9.3) | 0.428 | 333 (9.7) | 306 (8.9) | 0.262 |
Previous mitral valve disease, n (%) | 912 (26.5) | 3971 (30.1) | < 0.001 | 912 (26.5) | 908 (26.4) | 0.913 |
Previous aortic valve disease, n (%) | 869 (25.3) | 3880 (29.4) | < 0.001 | 869 (25.3) | 846 (24.6) | 0.521 |
Congestive heart failure, n (%) | 972 (28.3) | 3666 (27.8) | 0.565 | 972 (28.3) | 935 (27.2) | 0.319 |
Septic arterial embolism, n (%) | 39 (1.1) | 164 (1.2) | 0.607 | 39 (1.1) | 46 (1.3) | 0.445 |
Dementia, n (%) | 61 (1.8) | 153 (1.2) | 0.004 | 61 (1.8) | 56 (1.6) | 0.641 |
Acute renal disease, n (%) | 617 (18.0) | 2432 (18.4) | 0.516 | 617 (18.0) | 598 (17.4) | 0.548 |
Chronic renal disease, n (%) | 592 (17.2) | 1329 (10.1) | < 0.001 | 592 (17.2) | 536 (15.6) | 0.068 |
Ischemic heart disease, n (%) | 627 (18.3) | 1467 (11.1) | < 0.001 | 627 (18.3) | 611 (17.8) | 0.616 |
COPD, n (%) | 602 (17.5) | 2167 (16.4) | 0.126 | 602 (17.5) | 643 (18.7) | 0.199 |
Atrial fibrillation, n (%) | 863 (25.1) | 2916 (22.1) | < 0.001 | 863 (25.1) | 867 (25.2) | 0.911 |
Shock, n (%) | 239 (7.0) | 1099 (8.3) | 0.008 | 239 (7.0) | 221 (6.4) | 0.385 |
Periannular complications/atrioventricular block, n (%) | 129 (3.8) | 600 (4.6) | 0.043 | 129 (3.8) | 165 (4.8) | 0.032 |
Heart valve surgery, n (%) | 479 (13.9) | 2630 (19.9) | < 0.001 | 479 (13.9) | 595 (17.3) | < 0.001 |
Dialysis, n (%) | 248 (7.2) | 761 (5.8) | < 0.001 | 248 (7.2) | 203 (5.9) | 0.028 |
Pacemaker implantation, n (%) | 89 (2.6) | 356 (2.7) | 0.725 | 89 (2.6) | 86 (2.5) | 0.818 |
Mechanical ventilation, n (%) | 410 (11.9) | 1774 (13.5) | 0.019 | 410 (11.9) | 412 (12.0) | 0.941 |
Coagulase-negative staphylococci, n (%) | 441 (12.8) | 1463 (11.1) | 0.004 | 441 (12.8) | 399 (11.6) | 0.122 |
Staphylococcus aureus, n (%) | 504 (14.7) | 1685 (12.8) | 0.003 | 504 (14.7) | 452 (13.2) | 0.070 |
Streptococci, n (%) | 649 (18.9) | 2897 (22.0) | < 0.001 | 649 (18.9) | 749 (21.8) | 0.003 |
Enterococci, n (%) | 557 (16.2) | 1887 (14.3) | 0.005 | 557 (16.2) | 488 (14.2) | 0.020 |
Streptococcus pneumoniae, n (%) | 15 (0.4) | 58 (0.4) | 0.980 | 15 (0.4) | 13 (0.4) | 0.705 |
Anaerobes, n (%) | 21 (0.6) | 71 (0.5) | 0.608 | 21 (0.6) | 19 (0.6) | 0.751 |
Gram-negative bacilli, n (%) | 264 (7.7) | 1012 (7.7) | 0.983 | 264 (7.7) | 260 (7.6) | 0.856 |
Candidiasis/aspergillosis, n (%) | 3 (0.1) | 32 (0.2) | 0.077 | 3 (0.1) | 11 (0.3) | 0.032 |
Readmissions, n (%) | 687 (20.0) | 2091 (15.9) | < 0.001 | 687 (20.0) | 632 (18.4) | 0.092 |
Length of hospital stay, mean (SD) | 27.17 (20.4) | 27.51 (22.1) | 0.405 | 27.17 (20.4) | 27.43 (22.1) | 0.616 |
In-hospital mortality, n (%) | 714 (20.8) | 2562 (19.4) | 0.075 | 714 (20.8) | 682 (19.9) | 0.337 |
Cost, mean (SD) | 13,230.4 (10,000.7) | 14,452.0 (12,845.6) | < 0.001 | 13,230.4 (10,000.7) | 14,045.3 (12,713.2) | 0.003 |
In-hospital mortality before matching | In-hospital mortality after matching | |||||
---|---|---|---|---|---|---|
T2DM | Non T2DM | p value | T2DM | Non T2DM | p value | |
Time period, n (%) | ||||||
2001–2003 | 87 (25.2) | 431 (21.4) | 0.109 | 87 (25.2) | 95 (25.6) | 0.995 |
2004–2006 | 101 (20.8) | 397 (18.7) | 0.282 | 101 (20.8) | 92 (20.2) | 0.818 |
2007–2009 | 135 (22.4) | 439 (19.1) | 0.067 | 135 (22.4) | 112 (19.4) | 0.215 |
2010–2012 | 209 (21.7) | 638 (20.2) | 0.292 | 209 (21.7) | 194 (20.9) | 0.663 |
2013–2015 | 182 (17.5) | 657 (18.4) | 0.516 | 182 (17.5) | 189 (17.1) | 0.809 |
Sex, n (%) | ||||||
Male | 414 (18.9) | 1592 (18.0) | 0.33 | 414 (18.9) | 405 (18.6) | 0.844 |
Female | 300 (24.2) | 970 (22.4) | 0.192 | 300 (24.2) | 277 (22.0) | 0.186 |
Age, mean (SD) | 73.2 (9.7) | 71.5 (11.4) | < 0.001 | 73.2 (9.7) | 72.9 (10.9) | 0.540 |
Age groups, n (%) | ||||||
40–66 years old | 150 (14.6) | 754 (13.9) | 0.555 | 150 (14.6) | 154 (14.4) | 0.933 |
67–75 years old | 228 (19.8) | 696 (19.6) | 0.91 | 228 (19.8) | 194 (19.1) | 0.706 |
≥ 76 years old | 336 (26.8) | 1112 (26.4) | 0.791 | 336 (26.8) | 334 (24.7) | 0.206 |
CCI, mean (SD) | 1.3 (0.7) | 1.2 (0.8) | 0.001 | 1.3 (0.7) | 1.3 (0.7) | 0.484 |
Prosthetic valve carriers, n (%) | 57 (17.1) | 213 (17.5) | 0.884 | 57 (17.1) | 56 (18.3) | 0.695 |
Previous mitral valve disease, n (%) | 190 (20.8) | 723 (18.2) | 0.067 | 190 (20.8) | 180 (19.8) | 0.593 |
Previous aortic valve disease, n (%) | 184 (21.2) | 730 (18.8) | 0.111 | 184 (21.2) | 161 (19.0) | 0.269 |
Congestive heart failure, n (%) | 274 (28.2) | 1108 (30.2) | 0.218 | 274 (28.2) | 284 (30.4) | 0.295 |
Septic arterial embolism, n (%) | 9 (23.1) | 45 (27.4) | 0.58 | 9 (23.1) | 10 (21.7) | 0.883 |
Dementia, n (%) | 18 (29.5) | 46 (30.1) | 0.936 | 18 (29.5) | 16 (28.6) | 0.911 |
Acute renal disease, n (%) | 241 (39.1) | 914 (37.6) | 0.499 | 241 (39.1) | 224 (37.5) | 0.566 |
Chronic renal disease, n (%) | 161 (27.2) | 354 (26.6) | 0.798 | 161 (27.2) | 135 (25.2) | 0.444 |
Ischemic heart disease, n (%) | 167 (26.6) | 338 (23.0) | 0.078 | 167 (26.6) | 143 (23.4) | 0.190 |
COPD, n (%) | 129 (21.4) | 463 (21.4) | 0.974 | 129 (21.4) | 138 (21.5) | 0.989 |
Atrial fibrillation, n (%) | 176 (20.4) | 662 (22.7) | 0.152 | 176 (20.4) | 201 (23.2) | 0.160 |
Shock, n (%) | 169 (70.7) | 727 (66.2) | 0.175 | 169 (70.7) | 157 (71.0) | 0.938 |
Periannular complications/atrioventricular block, n (%) | 31 (24.0) | 148 (24.7) | 0.879 | 31 (24.0) | 38 (23.0) | 0.841 |
Heart valve surgery, n (%) | 108 (22.6) | 622 (23.7) | 0.6 | 108 (22.6) | 149 (25.0) | 0.341 |
Dialysis, n (%) | 115 (46.4) | 409 (53.8) | 0.044 | 115 (46.4) | 94 (46.3) | 0.989 |
Pacemaker implantation, n (%) | 16 (18.0) | 51 (14.3) | 0.39 | 16 (18.0) | 11 (12.8) | 0.344 |
Mechanical ventilation, n (%) | 204 (49.8) | 883 (49.8) | 0.995 | 204 (49.8) | 213 (51.7) | 0.577 |
Coagulase-negative staphylococci, n (%) | 88 (20.0) | 303 (20.7) | 0.73 | 88 (20.0) | 79 (19.8) | 0.955 |
Staphylococcus aureus, n (%) | 142 (28.2) | 476 (28.3) | 0.974 | 142 (28.2) | 125 (27.7) | 0.858 |
Streptococci, n (%) | 81 (12.5) | 276 (9.5) | 0.024 | 81 (12.5) | 76 (10.2) | 0.169 |
Enterococci, n (%) | 96 (17.2) | 285 (15.1) | 0.223 | 96 (17.2) | 72 (14.8) | 0.276 |
Streptococcus pneumoniae, n (%) | 1 (6.7) | 9 (15.5) | 0.389 | 1 (6.7) | 2 (15.4) | 0.469 |
Anaerobes, n (%) | 2 (9.5) | 9 (12.7) | 0.697 | 2 (9.5) | 3 (15.8) | 0.555 |
Gram-negative bacilli, n (%) | 50 (18.9) | 226 (22.3) | 0.234 | 50 (18.9) | 51 (19.6) | 0.845 |
Candidiasis/aspergillosis, n (%) | 2 (66.7) | 14 (43.8) | 0.459 | 2 (66.7) | 6 (54.6) | 0.708 |
Readmissions, n (%) | 152 (22.1) | 477 (22.8) | 0.709 | 152 (22.1) | 144 (22.8) | 0.774 |
Length of hospital stay, mean (SD) | 19.8 (19.2) | 22.8 (23.9) | 0.002 | 19.8 (19.2) | 23.5 (24.2) | 0.002 |
Cost, mean (SD) | 14,856.9 (12,956.0) | 18,334.8 (18,939.4) | < 0.001 | 14,856.9 (12,956.0) | 17,408.9 (18,431.4) | 0.003 |
Multivariable logistic regression analysis of the factors associated with IHM
T2DM | No T2DM | Total | |
---|---|---|---|
OR (95% CI) | OR (95% CI) | OR (95% CI) | |
Time period | 0.8 (0.8–0.9) | 0.8 (0.8–0.9) | 0.8 (0.8–0.9) |
Female sex | 1.3 (1.1–1.6) | NS | 1.2 (1.0–1.3) |
Agea | 1.8 (1.6–2.0) | 1.8 (1.6–2.0) | 1.8 (1.7–2.0) |
Charlson Comorbidity Index | 1.6 (1.5–1.8) | 1.6 (1.5–1.8) | 1.7 (1.5–1.8) |
Acute renal disease | 2.0 (1.6–2.5) | 1.9 (1.5–2.4) | 2.0 (1.7–2.3) |
Ischemic heart disease | 1.3 (1.0–1.6) | NS | NS |
COPD | 0.7 (0.5–0.9) | 0.7 (0.5–0.9) | 0.7 (0.6–0.8) |
Shock | 8.6 (6.1–12.1) | 7.1 (5.0–10.1) | 7.4 (5.8–9.5) |
Dialysis | 2.5 (1.8–3.5) | 1.8 (1.3–2.6) | 2.1 (1.7–2.7) |
Pacemaker implantation | NS | 0.4 (0.2–0.8) | 0.5 (0.3–0.9) |
Mechanical ventilation | 3.3 (2.5–4.4) | 3.7 (2.8–4.8) | 3.4 (2.8–4.1) |
Staphylococcus aureus | NS | NS | 1.2 (1.0–1.5) |
Streptococci | 0.6 (0.5–0.8) | 0.4 (0.3–0.6) | 0.5 (0.4–0.6) |
Enterococci | NS | 0.6 (0.5–0.9) | 0.8 (0.6–0.9) |
Streptococcus pneumoniae | NS | NS | 0.2 (0.0–1.0) |
T2DM | NA | NA | 1.1 (0.9–1.2) |