| Variables . | All patients (n = 1020) . | Patients on digitalis (n = 438) . | Patients not on digitalis (n = 582) . | P-value . |
|---|---|---|---|---|
| Age mean (SD) (years) | 63 (12) | 63 (11) | 62 (13) | n.s. |
| Male gender, n (%) | 809 (79) | 345 (79) | 464 (80) | n.s. |
| Primary prevention, n (%) | 585 (58) | 251 (57) | 334 (57) | n.s. |
| Secondary prevention, n (%) | 430 (42) | 182 (43) | 248 (43) | |
| Ischaemic heart disease, n (%) | 690 (68) | 288 (66) | 402 (69) | 0.02 |
| Non-ischaemic heart disease, n (%) | 430 (32) | 150 (34) | 248 (43) | |
| NYHA classification, n (%) | <0.001 | |||
| 0 + I | 256 (25) | 52 (12) | 204 (35) | |
| II | 348 (34) | 156 (36) | 192 (33) | |
| III | 257 (25) | 167 (38) | 90 (15) | |
| IV | 23 (2) | 16 (4) | 7 (1) | |
| LVEF mean, % (SD) | 33 (13) | 26 (8) | 38 (14) | <0.001 |
| ICD type, n (%) | <0.001 | |||
| Single chamber | 561 (55) | 233 (53) | 328 (56) | |
| Dual chamber | 295 (29) | 106 (24) | 189 (32) | |
| CRT-D | 159 (16) | 94 (21) | 65 (11) | |
| QRS ≥120 ms, n (%) | 397 (39) | 206 (47) | 191 (33) | <0.001 |
| Documented AF, n (%) | 150 (15) | 94 (21) | 56 (10) | <0.001 |
| Diabetes mellitus, n (%) | 311 (30) | 169 (39) | 142 (24) | <0.001 |
| Chronic kidney failure, n (%) | 258 (25) | 150 (34) | 108 (19) | <0.001 |
| Variables . | All patients (n = 1020) . | Patients on digitalis (n = 438) . | Patients not on digitalis (n = 582) . | P-value . |
|---|---|---|---|---|
| Age mean (SD) (years) | 63 (12) | 63 (11) | 62 (13) | n.s. |
| Male gender, n (%) | 809 (79) | 345 (79) | 464 (80) | n.s. |
| Primary prevention, n (%) | 585 (58) | 251 (57) | 334 (57) | n.s. |
| Secondary prevention, n (%) | 430 (42) | 182 (43) | 248 (43) | |
| Ischaemic heart disease, n (%) | 690 (68) | 288 (66) | 402 (69) | 0.02 |
| Non-ischaemic heart disease, n (%) | 430 (32) | 150 (34) | 248 (43) | |
| NYHA classification, n (%) | <0.001 | |||
| 0 + I | 256 (25) | 52 (12) | 204 (35) | |
| II | 348 (34) | 156 (36) | 192 (33) | |
| III | 257 (25) | 167 (38) | 90 (15) | |
| IV | 23 (2) | 16 (4) | 7 (1) | |
| LVEF mean, % (SD) | 33 (13) | 26 (8) | 38 (14) | <0.001 |
| ICD type, n (%) | <0.001 | |||
| Single chamber | 561 (55) | 233 (53) | 328 (56) | |
| Dual chamber | 295 (29) | 106 (24) | 189 (32) | |
| CRT-D | 159 (16) | 94 (21) | 65 (11) | |
| QRS ≥120 ms, n (%) | 397 (39) | 206 (47) | 191 (33) | <0.001 |
| Documented AF, n (%) | 150 (15) | 94 (21) | 56 (10) | <0.001 |
| Diabetes mellitus, n (%) | 311 (30) | 169 (39) | 142 (24) | <0.001 |
| Chronic kidney failure, n (%) | 258 (25) | 150 (34) | 108 (19) | <0.001 |
SD, standard deviation; NYHA, New York Heart Association classification; LVEF, left ventricular ejection fraction; CRT-D, cardiac resynchronization therapy-defibrillator; AF, atrial fibrillation.
| Variables . | All patients (n = 1020) . | Patients on digitalis (n = 438) . | Patients not on digitalis (n = 582) . | P-value . |
|---|---|---|---|---|
| Age mean (SD) (years) | 63 (12) | 63 (11) | 62 (13) | n.s. |
| Male gender, n (%) | 809 (79) | 345 (79) | 464 (80) | n.s. |
| Primary prevention, n (%) | 585 (58) | 251 (57) | 334 (57) | n.s. |
| Secondary prevention, n (%) | 430 (42) | 182 (43) | 248 (43) | |
| Ischaemic heart disease, n (%) | 690 (68) | 288 (66) | 402 (69) | 0.02 |
| Non-ischaemic heart disease, n (%) | 430 (32) | 150 (34) | 248 (43) | |
| NYHA classification, n (%) | <0.001 | |||
| 0 + I | 256 (25) | 52 (12) | 204 (35) | |
| II | 348 (34) | 156 (36) | 192 (33) | |
| III | 257 (25) | 167 (38) | 90 (15) | |
| IV | 23 (2) | 16 (4) | 7 (1) | |
| LVEF mean, % (SD) | 33 (13) | 26 (8) | 38 (14) | <0.001 |
| ICD type, n (%) | <0.001 | |||
| Single chamber | 561 (55) | 233 (53) | 328 (56) | |
| Dual chamber | 295 (29) | 106 (24) | 189 (32) | |
| CRT-D | 159 (16) | 94 (21) | 65 (11) | |
| QRS ≥120 ms, n (%) | 397 (39) | 206 (47) | 191 (33) | <0.001 |
| Documented AF, n (%) | 150 (15) | 94 (21) | 56 (10) | <0.001 |
| Diabetes mellitus, n (%) | 311 (30) | 169 (39) | 142 (24) | <0.001 |
| Chronic kidney failure, n (%) | 258 (25) | 150 (34) | 108 (19) | <0.001 |
| Variables . | All patients (n = 1020) . | Patients on digitalis (n = 438) . | Patients not on digitalis (n = 582) . | P-value . |
|---|---|---|---|---|
| Age mean (SD) (years) | 63 (12) | 63 (11) | 62 (13) | n.s. |
| Male gender, n (%) | 809 (79) | 345 (79) | 464 (80) | n.s. |
| Primary prevention, n (%) | 585 (58) | 251 (57) | 334 (57) | n.s. |
| Secondary prevention, n (%) | 430 (42) | 182 (43) | 248 (43) | |
| Ischaemic heart disease, n (%) | 690 (68) | 288 (66) | 402 (69) | 0.02 |
| Non-ischaemic heart disease, n (%) | 430 (32) | 150 (34) | 248 (43) | |
| NYHA classification, n (%) | <0.001 | |||
| 0 + I | 256 (25) | 52 (12) | 204 (35) | |
| II | 348 (34) | 156 (36) | 192 (33) | |
| III | 257 (25) | 167 (38) | 90 (15) | |
| IV | 23 (2) | 16 (4) | 7 (1) | |
| LVEF mean, % (SD) | 33 (13) | 26 (8) | 38 (14) | <0.001 |
| ICD type, n (%) | <0.001 | |||
| Single chamber | 561 (55) | 233 (53) | 328 (56) | |
| Dual chamber | 295 (29) | 106 (24) | 189 (32) | |
| CRT-D | 159 (16) | 94 (21) | 65 (11) | |
| QRS ≥120 ms, n (%) | 397 (39) | 206 (47) | 191 (33) | <0.001 |
| Documented AF, n (%) | 150 (15) | 94 (21) | 56 (10) | <0.001 |
| Diabetes mellitus, n (%) | 311 (30) | 169 (39) | 142 (24) | <0.001 |
| Chronic kidney failure, n (%) | 258 (25) | 150 (34) | 108 (19) | <0.001 |
SD, standard deviation; NYHA, New York Heart Association classification; LVEF, left ventricular ejection fraction; CRT-D, cardiac resynchronization therapy-defibrillator; AF, atrial fibrillation.
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