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Table 1 Demographic and clinical characteristics of the Norwegian and Italian [8] cohorts

From: Measuring quality of life of primary antibody deficiency patients using a disease-specific health-related quality of life questionnaire for common variable immunodeficiency (CVID_QoL)

  Norway N (%) Italy [8] N (%)
Demographic characteristics
 Total 83 (100) 118 (100)
 Male 20 (24) 46 (39)
 Female 63 (76) 72 (61)
 Mean age (years, SD) 47 (16) NA
 Age ≤ 50 years 45 (54) 66 (56)
 Age > 50 years 38 (46) 52 (44)
 Education ≤13 years 37 (45) 31 (26)
 Education > 13 years 45 (54) 87 (74)
 No children < 18 years 61 (74) NA
 Children < 18 years 21 (25) NA
Clinical characteristics
 CVID 52 (63) 118 (100)
 Other PAD 31 (37) 0 (0)
 Mean disease duration (years, SD) 15 (12)* 12 (11)
 SCIG 28 (88)** 13 (11)
 IVIG 4 (13)** 105 (89)
 BMI ≤ 18,5 3 (4) 9 (7)
 BMI 18,6 - 24,9 39 (47) 67 (57)
 BMI ≥ 25 27 (33) 42 (36)
  1. NA = not available, CVID = common variable immunodeficiency, PAD = primary antibody deficiency, SCIG = subcutaneous immunoglobulin, IVIG = intravenous immunoglobulin, BMI = body mass index. N is reported as frequencies. Percentages (%) are calculated from the total number of patients in the respective samples unless specified otherwise. Some numbers were rounded so not all percentages total 100%.*Data only available for the patients recruited through the mail survey (n = 51).**Data only available for the patients recruited through the CRD seminar (n = 32)