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. 2018 Jul 11;8(7):e022558. doi: 10.1136/bmjopen-2018-022558

Table 4.

Anticoagulation status on admission and on discharge according to age, sex and CHADS2 categories in patients with AF

Anticoagulant treatment prior to admission Group differences Anticoagulant treatment on discharge Group differences
Yes
n=302
(45.3%)
No
n=279
(41.9%)
Not suitable
n=85
(12.8%)
χ2 P values Yes
n=492
(88.8%)
No
n=1
(0.2%)
Not suitable
n=61
(11.0%)
χ2 P values
Age
 <65 years 18 (43.9%) 15 (36.6%) 8 (19.5%) 4.1 0.397 35 (92.1%) 1 (2.6%) 2 (5.3%) 17.7 0.001
 65–74 years 41 (45.6%) 42 (46.7%) 7 (7.8%) 77 (93.9%) 0 (0.0%) 5 (6.1%)
 ≥75 years 243 (45.4%) 222 (41.5%) 70 (13.1%) 380 (87.6%) 0 (0.0%) 54 (12.4%)
Sex
 Men 145 (48.2%) 113 (37.5%) 43 (14.3%) 4.4 0.108 224 (89.6%) 0 (0.0%) 26 (10.4%) 1.0 0.604
 Women 157 (43.0%) 166 (45.5%) 42 (11.5%) 268 (88.2%) 1 (0.3%) 35 (11.5%)
CHADS2
 0 4 (13.3%) 20 (66.7%) 6 (20.0%) 13.3 0.010 34 (97.1%) 0 (0.0%) 1 (2.9%) 8.0 0.090
 1 72 (48.6%) 59 (39.9%) 17 (11.5%) 127 (91.4%) 1 (0.7%) 11 (7.9%)
 ≥2 226 (46.3%) 200 (41.0%) 62 (12.7%) 331 (87.1%) 0 (0.0%) 49 (12.9%)

AF, atrial fibrillation; CHADS2, congestive heart failure, hypertension, age, stroke/TIA; TIA, transient ischaemic attack.