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Table 3 Patient characteristics and outcomes

From: Validation of an algorithm based on administrative data to detect new onset of atrial fibrillation after cardiac surgery

Patient characteristics UHC A (n = 479) UHC B (n = 497) Total (n = 976)
Age in years – M (SD) 68.4 (9.2) 68.6 (10.7) 68.5 (10.0)
Male sex – n (%) 363 (75.8) 328 (66.0) 691 (70.8)
Charlson score – M (SD) 0.76 (1.21) 1.70 (1.65) 1.24 (1.52)
HES score – M (SD) 4.6 (6.4) 4.6 (7.2) 4.6 (6.8)
Admission type – n (%)
 Elective 256 (53.4) 69 (13.9) 325 (33.3)
 Semi-urgent 35 (7.3) 314 (63.2) 349 (35.8)
 Urgent 188 (39.3) 114 (22.9) 302 (30.9)
Surgery type – n (%)
 CABG 201 (42.0) 256 (51.5) 457 (46.8)
 Valvular 149 (31.1) 143 (28.8) 292 (29.9)
 Mixed CABG-valvular 129 (27.0) 98 (19.7) 227 (23.3)
Maze procedure – n (%) 15 (3.1) 16 (3.2) 31 (3.2)
POAF – n (%)
 CABG 59 (29.4) 81 (31.6) 140 (30.6)
 Valvular 52 (34.9) 37 (25.9) 89 (30.5)
 Mixed CABG-valvular 63 (48.8) 32 (32.7) 95 (41.9)
 Total 174 (36.3) 150 (30.2) 324 (33.2)
In-hospital death – n (%) 22 (4.6) 26 (5.23) 48 (4.9)
Length of hospital stay in days - Md (Range) 12 (3–127) 9 (2–217) 11 (2–217)
Number of hospitalizations in the previous 12 months - Md (Range) 0 (0–4) 0 (0–4) 0 (0–4)
Number of ER visits in the previous 12 months - Md (Range) 0 (0–20) 0 (0–4) 0 (0–20)
  1. Abbreviations: AF: Atrial fibrillation, CABG Coronary artery bypass graft, ER Emergency room, HES Hospital Episode Statistic score, M Means, Md Median, SD Standard deviation