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Table 8 Comparison of pre- and post-intervention knowledge scores within each trial arm

From: Early warning scoring systems versus standard observations charts for wards in South Africa: a cluster randomized controlled trial

  Pre-intervention score Post-intervention score Paired t-test for equality of means within trial arms
  Mean score (%, SD) Mean score (%, SD) Mean difference (%, SD) t-value (df) Pvalue
Intervention arm (n = 25) 10/23 (41.9, 14.6) 14/23 (61.4, 27.9) 4/23 (19.5, 25.6) 3.804 (24) 0.001
Control arm (n = 25) 9/23 (37.2, 18.19) 10/23 (41.2, 16.22) 1/23 (4.0, 13.2) −1.512 (24) 0.144