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Table 2 Correct knowledge scores before, immediately after and after six months following training (N = 102)

From: Impact of a postcrash first aid educational program on knowledge, perceived skills confidence, and skills utilization among traffic police officers: a single-arm before-after intervention study

 Before trainingImmediately after trainingSix months after training  
 T0T1T2T0-T1T0-T2
Knowledge itemsn (%)n (%)n (%)p valuep value
Prioritizing care90 (88.2)102 (100)98 (96.1)NA0.077
Assess responsiveness53 (52)97 (95.1)76 (74.5)0.001*0.001
Open airway13 (12.7)56 (54.9)52 (51)0.001*0.001*
Assess breathing50 (49)87 (85.3)61 (59.8)0.001*0.135
Control external45 (44.1)90 (88.2)70 (68.6)0.001*0.001
Care of fractures64 (62.7)87 (85.3)84 (82.4)0.001*0.001
Recovery position25 (24.5)91 (89.2)83 (81.4)0.001*0.001*
Head & neck immobilization25 (24.5)69 (67.6)71 (69.6)0.001*0.001*
  1. *P< 0.001, statistically significant at P< 0.05 (McNemar’s test)
  2. T0 = Before training, T1 = Immediately after training, T2 = After six months following training
  3. NA = No statistics computed because T1 is constant