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Table 1 Number of patient contacts and number and percentage of doses prescribed recorded for each physician according to waiting rooms (intervention and control) during the 6-month reference period (no audiovisual equipment) and the 6-month study period (audiovisual equipment in the intervention group and none in the control group).

From: Effect of an audiovisual message for tetanus booster vaccination broadcast in the waiting room

Waiting rooms Reference period (July-December 2007) Study period (July-December 2008)
   Number of contacts Number of doses Percent Number of contacts Number of doses Percent
Intervention group GP1 3382 9 0.27 3154 31 0.98
  GP2 3936 30 0.76 3931 37 0.94
  GP3 4533 13 0.29 4381 23 0.52
  Total 11851 52 0.44(a)(b) 11466 91 0.79(b)(d)
Control group GP4 2816 19 0.67 2630 14 0.59
  GP5 2413 5 0.21 2438 6 0.25
  GP6 3495 9 0.26 3575 14 0.39
  Total 8724 33 0.38(a)(c) 8643 34 0.39(c)(d)
  1. Proportions were compared two by two by the chi-squared test and corresponding p-values are indicated by the same superscript as footnotes.
  2. (a) 0.44 vs 0.38 (p = 0.50)
  3. (b) 0.44 vs 0.79 (p = 0.0005)
  4. (c) 0.38 vs 0.39 (p = 0.90)
  5. (d) 0.79 vs 0.39 (p < 0.0001)