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Table 3 Background data of participating patients (n = 498)

From: The effect of watchful waiting compared to immediate test ordering instructions on general practitioners' blood test ordering behaviour for patients with unexplained complaints; a randomized clinical trial (ISRCTN55755886)

Variables Categories Results
overall
(n = 498)
Randomization#
    Immediate
(n = 229)
Watchful waiting
(n = 95)
Watchful waiting + strategy
(n = 174)
Mean age in years (SD)   43 (16.2) 42 (15.5) 45 (15.2) 45 (17.5)
Gender (%) Male 140 (28) 67 (29) 18 (19) 55 (32)
Type of health insurance: private versus state (%) Private 164 (33) 80 (35) 37 (39) 47 (27)
Highest level of education (%) None completed
Primary
Secondary
Higher
4 (1)
46 (10)
323 (67)
106 (22)
2 (1)
20 (9)
146 (64)
55 (24)
1 (0)
5 (1)
65 (68)
21 22)
1 (0)
21 (12)
112 (64)
30 (17)
  1. #Differences between groups were statistically tested with X 2 tests or t-test when appropriate. No statistically significant differences (p > 0.05) were found between the randomization groups