Visit 1 (n=1,425) pre-treatment Visit 2 (n=1,342) up-dosing phase Visit 3 (n=1,186) maintenance phase
Age range (mean age) [years] 35–80 (52) 35–84 (54) 36–85 (55)
Sex, n (%)
male 810 (56.8) 774 (57.7) 679 (57.3)
female 615 (43.2) 568 (42.3) 507 (42.7)
Grade of SSR (index sting), n (%)
Grade I 122 (8.6) .. ..
Grade II 700 (49.1) .. ..
Grade III 589 (41.3) .. ..
Grade IV 14 (1.0) .. ..
Antihypertensive treatment, n (%)
no medication 1,035 (72.6) 1,001 (74.6) 886 (74.7)
β-blockers 148 (10.4) 123 (9.2) 105 (8.9)
ACEI 169 (11.9) 159 (11.9) 136 (11.5)
β-blockers and ACEI 71 (5.0) 58 (4.3) 55 (4.6)
Cardiovascular disease, n (%)
no disease 845 (59.3) 801 (59.7) 715 (60.3)
coronary heart disease or hypertension 571 (40.1) 533 (39.7) 463 (39.0)
Causal venom, n (%)
Bee 320 (22.5) 351 (26.2) 297 (25.0)
Vespid 838 (58.8) 923 (68.8) 829 (69.9)
Bee & vespid 206 (14.5) 67 (5.0) 57 (4.8)
Basal tryptase level, n (%)
≤ 11.4µg/L 1,159 (81.3) 1,092 (81.4) 972 (82.0)
> 11.4µg/L 127 (8.9) 121 (9.0) 108 (9.1)