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Table 2 Clinical respiratory illness (CRI) and average costs per HCW in each intervention arm for Beijing Trial 1 (2008/09) and Trial 2 (2009/10)

From: Cost-effectiveness analysis of N95 respirators and medical masks to protect healthcare workers in China from respiratory infections

Clinical respiratory illness (CRI) and average costs per HCW in each intervention arm in Trial 1 (Beijing 2008/09) with the adjusted estimate for All N95 combined shown in bold
  Continuous medical mask,
2014 USD, (RMB)
Continuous N95 non-fit tested
2014 USD, (RMB)
Continuous N95 fit tested
2014 USD, (RMB)
Continuous All N95 (without fit testing cost)
2014 USD, (RMB)
Continuous All N95 (with fit testing cost)
2014 USD, (RMB)
CRI % 6.7% 3.3% 4.6% 2.6% a 2.6% a
Estimated cases prevented per 1000 HCWs compared to medical mask NA 34 22 41 a 41 a
Intervention costs per HCW 8.53 (53) 32.07 (199) 60.40 (374) 32.07 (199) 60.40 (374)
CRI costs per HCW 0.81 (5) 0.39 (2) 0.64 (4) 0.31 (2) 0.31 (2)
Total costs per HCW 9.34 (58) 32.46 (201) 61.04 (378) 32.48 (201) 60.72 (376)
Clinical respiratory illness (CRI) and average costs per HCW in each intervention arm in Trial 2 (Beijing 2009/10) with the adjusted estimate for continuous N95 fit tested shown in bold
  Continuous medical mask
2014 USD, (RMB)
Targeted N95 fit tested
2014 USD, (RMB)
Continuous N95 fit tested
2014 USD, (RMB)
Continuous N95 fit tested
2014 USD, (RMB)
 
CRI % 17.1% 11.8% 7.2% 6.7% b  
Estimated cases prevented per 1000 HCWs compared to medical mask NA 53 99 105 b  
Intervention costs per HCW 9.35 (58) 61.31 (380) 61.31 (380) 61.31 (380)  
CRI costs per HCW 1.40 (9) 0.97 (6) 0.59 (4) 0.55 (3)  
Total costs per HCW 10.75 (67) 62.28 (386) 61.90 (384) 61.86 (384)  
  1. aResults calculated based on the clustering and confounder adjusted odds ratio (0.38) for All N95 compared to medical mask (equivalent to a 62% efficacy = 1 - OR)
  2. bResults calculated based on the clustering and confounder adjusted hazard ratio (0.39) for continuous N95 fit tested compared to medical mask (equivalent to a 61% efficacy = 1 - HR)