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Table 1 Demographic data of patients selected for the study, completers (patients who completed the questionnaires) and non-completers (patients excluded from the study)

From: Factors influencing quality of life in patients followed in the neurosonology laboratory for carotid stenosis

  Patients selected for the study (n = 502) Completers (344 patients) Non-completers (n = 158) P value*
Male gender; n (%) 260 (51.8) 164 (47.7) 96 (60.8) 0.006a
Age, years; median, mean ± SD 71, 70.0 ± 7.6 71, 69.5 ± 7.8 72, 70.8 ± 7.0 0.069b
Weight, kg; median, mean ± SD 81, 81.1 ± 15.3 80, 80.4 ± 14.9 82, 82.6 ± 15.9 0.144b
Height, cm; median, mean ± SD 168, 168.9 ± 8.4 169, 169.0 ± 8.3 169, 169.2 ± 8.6 0.523b
Body mass index; median, mean ± SD 28, 28.3 ± 4.4 28, 28.1 ± 4.2 29, 28.7 ± 4.7 0.357b
Systolic blood pressure, mm Hg; median, mean ± SD 135, 135.1 ± 12.4 135, 134.8 ± 12.3 136, 135.6 ± 12.6 0.412b
Diastolic blood pressure, mm Hg; median, mean ± SD 80, 79.4 ± 8.3 80, 79.3 ± 8.4 80, 79.6 ± 8.2 0.498b
Visual pain scale; median, mean ± SD 4, 3.8 ± 2.5 4, 3.9 ± 2.5 4, 3.6 ± 2.5 0.168b
Arterial hypertension; n (%) 429 (85.5) 141 (89.2) 141 (89.2) 0.083a
Diabetes mellitus; n (%) 115 (22.9) 39 (24.7) 39 (24.7) 0.528a
Hyperlipidemia; n (%) 268 (53.4) 191 (55.5) 77 (48.7) 0.294a
Coronary heart disease; n (%) 156 (31.1) 99 (28.8) 57 (36.1) 0.109a
Myocardial infarction; n (%) 49 (9.8) 35 (10.2) 14 (8.9) 0.639a
Atrial fibrillation; n (%) 66 (13.1) 43 (12.5) 23 (14.6) 0.711a
Other heart disease; n (%) 53 (10.6) 32 (9.3) 21 (13.3) 0.203a
Transient ischemic attack; n (%) 57 (11.4) 42 (12.2) 15 (9.5) 0.624a
Stroke; n (%) 217 (43.2) 145 (42.2) 72 (45.6) 0.535a
Surgery/stenting of arteries; n (%) 106 (21.1) 79 (23.0) 27 (17.1) 0.120a
Smoking; n (%) 62 (12.4) 49 (14.2) 13 (8.2) 0.057a
Social situation; n (%) Living alone 111 (22.1) 72 (21.0) 39 (24.7) 0.268c
Living with partner 94 (18.7) 60 (17.4) 34 (21.5)
Living with family 297 (59.2) 212 (61.6) 85 (53.8)
Education; n (%) Primary 106 (21.1) 67 (19.5) 39 (24.7) 0.152c
Secondary without graduation 146 (29.1) 104 (30.2) 42 (26.6)
Secondary with graduation 160 (31.9) 115 (33.4) 45 (28.5)
Tertiary 90 (17.9) 58 (16.9) 32 (20.3)
Alcohol consumption, units/day; n (%) 0 253 (50.4) 170 (49.4) 83 (52.5) 0.244c
1 143 (28.5) 109 (31.7) 34 (21.5)
2 100 (19.9) 60 (17.4) 40 (25.3)
≥ 3 6 (1.2) 5 (1.5) 1 (0.6)
  1. n – number; SD – standard deviation; * global test comparing the distributions of completers and non-completers; a Fisher’s exact test; b Student’s t-test; c– Kruskal-Wallis test