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Table 1 General characteristics of participating GPs: figures are numbers (percentage) unless stated otherwise.

From: The effect of giving influenza vaccination to general practitioners: a controlled trial [NCT00221676]

  2002 2003
  VAC UNVAC VAC UNVAC
General     
Men 50/77 (64.9) 25/45 (55.6) 61/100 (61.0) 18/40 (45.0)
Mean (SE) of age 42.4 (1.1) 40.0 (1.5) 43.1 (0.9) 41.3 (10.8)
Influenza vaccine 1 and 2 years before 60/77 (77.9) 3/43 (7.0) ‡ 67/94 (71.3) 3/38 (7.9) ‡
Influenza vaccine 1 year before 66/77 (85.7) 3/44 (6.8) ‡ 78/95 (82.1) 3/39 (7.7) ‡
Influenza vaccine 1, 2, and 3 years before 54/71 (76.1) 1/42 (2.4)‡ 62/91 (68.1) 3/38 (7.9) ‡
Influenza vaccine 2 years before 64/77 (83.1) 8/43 (18.6) ‡ 73/94 (77.7) 3/38 (7.9) ‡
Influenza vaccine 3 years before 59/71 (83.1) 6/42 (14.3) ‡ 73/91 (80.2) 4/38 (10.5) ‡
Influenza disease 1 year before 9/75 (12.0) 7/42 (16.7) 11/93 (11.8) 4/38 (10.5)
Working in Child and Family preventive medicine facility 11/75 (14.7) 4/45 (8.9) 13/100 (13.0) 4/40 (10.0)
Having young children < 7 years of age 20/70 (28.6) 14/44 (31.8) 21/98 (21.4) 10/40 (25.0)
Smoking 7/72 (9.7) 3/42 (7.1) 9/96 (9.4) 1/39 (2.6)
Allergy 21/72 (29.2) 9/42 (21.4) 23/94 (24.5) 6/38 (15.8)
Seroprotection at baseline1 against A:/H3N2 61/67 (91.0) 31/39 (79.5) 56/80 (70.0) 15/36 (41.7) †
GMT12 A:/H3N2 (SE) 125.39(1.12) 77.26 (1.19) † 54.25 (1.14) 22.34 (1.23) ‡
Information from the diaries     
GPs with family members with influenza 34/66 (51.5) 19/35 (54.3) 54/96 (56.3) 20/40 (50.0)
GPs with colleagues with influenza 23/66 (34.8) 12/35 (34.3) 35/96 (36.5) 15/40 (37.5)
Mean (SE) number of patient contacts/day 21.3 (1.0) 17.9 (1.3) † 20.4 (0.8) 16.6 (1.2) †
Mean (SE) number of patients with influenza/day 1.6 (0.2) 1.7 (0.2) 2.0 (0.2) 2.1 (0.3)
  1. 1number of GPs with a baseline titre (T1) > 40
  2. 2 geometric mean baseline titre (T1)
  3. † p-value < 0.05
  4. ‡ p-value < 0.0001