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Table 2 Numerical results comparing the mean number of correct, incorrect and unsure responses per participant of both control and intervention groups.

From: Utilizing video on myocardial infarction as a health educational intervention in patient waiting areas of the developing world: A study at the emergency department of a major tertiary care hospital in India

  Control Intervention group t test Control Intervention group t test
  group
(pre test)
n = 106
(pre test)
n = 111
p value
control vs.
intervention
(pre test)
group
(post test)
n = 106
(post test)
n = 111
p value
control vs. intervention
(post test)
Mean number of correct responses per participant 19.0 (95% CI:
17.8–20.1)
SD: 5.4
18.1 (95% CI:
16.9–19.2)
SD: 5.8
P = 0.19 20.0 (95% CI:
18.9–21.0)
SD: 5.2
27.0 (95% CI:
25.9–28.1)
SD: 5.5
P < 0.001
Mean number of incorrect responses per participant 8.6 (95% CI:
7.5–9.7)
SD: 5.0
9.4 (95% CI:
8.2–10.5)
SD: 4.8
P = 0.27 7.7 (95% CI:
6.6–8.7)
SD: 4.6
8.3 (95% CI:
7.4–9.4)
SD: 4.6
P = 0.35
Mean number of "unsure" responses per participant 9.3 (95% CI:
8.2–10.4)
SD: 6.7
9.6 (95% CI:
8.5–10.7)
SD: 7.3
P = 0.78 9.4 (95% CI:
8.3–10.5)
SD: 6.7
1.8 (95% CI:
1.2–2.3)"
SD: 3.0
P < 0.001
  1. 95% confidence intervals are also shown, along with standard deviations (SD). Data are from pretest and posttest surveys given to each group. P-values are generated using the 2- samplet-test, and considered statistically significant at p < 0.05.