Table 1.
Characteristics of patients receiving pacemaker by sex*
| Men
|
Women
|
|||||||
|---|---|---|---|---|---|---|---|---|
| No (%) | Mean age | Median age | No (%) | Mean age | Median age | P value† | ||
| Age (years) | n=15 648 | n=15 110 | ||||||
| Mean (SD) | 73.8 (12.1) | 77.6 (10.9) | <0.001 | |||||
| Median (interquartile range) | 73.6 (65.8-80.8) | 77.4 (70.4-82.4) | ||||||
| Type of pacemaker | n=15 884 | n=15 389 | ||||||
| Single chamber atrial | 429 (2.7) | 67.5 | 68.3 | 492 (3.2) | 70.9 | 72.8 | <0.005 | |
| Single chamber ventricular | 10 499 (66.1) | 73.2 | 76.4 | 11 065 (71.9) | 75.8 | 78.7 | <0.001 | |
| Dual chamber | 4892 (30.8) | 67.7 | 70.1 | 3770 (24.5) | 69.8 | 72.4 | <0.001 | |
| Rate responsive‡ | 4273 (26.9) | 68.1 | 70.5 | 3186 (20.7) | 70.0 | 72.8 | <0.001 | |
| Symptoms | n=12 005 | n=11859 | ||||||
| Syncope | 4154 (34.6) | 71.8 | 74.5 | 4554 (38.4) | 75.4 | 78.3 | <0.001 | |
| Dizziness | 3229 (26.9) | 72.1 | 73.7 | 3368 (28.4) | 74.3 | 77.0 | <0.01 | |
| Bradycardia | 2389 (19.9) | 71.8 | 73.3 | 2063 (17.4) | 73.9 | 77.3 | <0.001 | |
| Heart failure | 708 (5.9) | 73.1 | 76.2 | 629 (5.3) | 75.8 | 78.7 | <0.05 | |
| Electrocardiographic result | n=11 874 | n=11 788 | ||||||
| Atrioventricular block | 4346 (36.6) | 71.5 | 74.0 | 3902 (33.1) | 74.1 | 78.0 | <0.001 | |
| Sick sinus syndrome | 3930 (33.1) | 72.0 | 73.7 | 4644 (39.4) | 74.8 | 77.2 | <0.001 | |
| Atrial fibrillation/flutter | 2209 (18.6) | 73.4 | 75.8 | 2181 (18.5) | 76.1 | 78.7 | 0.814 | |
| Aetiology | n=1 397 | n=11 263 | ||||||
| Ischaemic | 3932 (34.5) | 73.7 | 75.5 | 3627 (32.2) | 76.1 | 78.5 | <0.001 | |
| Fibrosis | 878 (7.7) | 71.7 | 73.8 | 969 (8.6) | 74.9 | 77.5 | <0.01 | |
| Carotid sinus syndrome | 524 (4.6) | 71.0 | 72.4 | 338 (3.0) | 75.9 | 78.3 | <0.001 | |
*
Categories with small numbers and cases labelled unknown are not included in the table.
†
Age analysed by t test, all other variables by χ2 test.
‡
Percentage of the above pacemaker systems with rate responsive function.