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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 characteristicsUHC 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 (%)
 Elective256 (53.4)69 (13.9)325 (33.3)
 Semi-urgent35 (7.3)314 (63.2)349 (35.8)
 Urgent188 (39.3)114 (22.9)302 (30.9)
Surgery type – n (%)
 CABG201 (42.0)256 (51.5)457 (46.8)
 Valvular149 (31.1)143 (28.8)292 (29.9)
 Mixed CABG-valvular129 (27.0)98 (19.7)227 (23.3)
Maze procedure – n (%)15 (3.1)16 (3.2)31 (3.2)
POAF – n (%)
 CABG59 (29.4)81 (31.6)140 (30.6)
 Valvular52 (34.9)37 (25.9)89 (30.5)
 Mixed CABG-valvular63 (48.8)32 (32.7)95 (41.9)
 Total174 (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