Table 3 Sensitivity analysis on the ICER based on variation in intervention efficacy and costs for Beijing Trial 1 (2008/09) and Trial 2 (2009/10)
Parameter input value | Trial 1 | Trial 2 | Source | ||
|---|---|---|---|---|---|
Continuous All N95 (without fit testing cost) 2014 USD, (RMB) | Continuous All N95 (with fit testing cost) 2014 USD, (RMB) | Continuous N95 fit tested 2014 USD, (RMB) | |||
Base case results | - | 549 (3404) | 1224 (7589) | 489 (3032) | - |
Intervention efficacy vs. Medical Mask | |||||
Lowest effectivenessa | 14% (Trial 1) 39% (Trial 2) | 2473 (15333) | 5462 (33864) | 1038 (6436) | [14] [15] |
Highest effectivenessa | 83% (Trial 1) 79% (Trial 2) | 407 (2523) | 911 (5648) | 376 (2331) | [14] [15] |
Alternative costs | |||||
Max treatment costs | $525b (3255 RMB) | 30 (186) | 704 (4365) | Cost savingb | [22] |
Min treatment costs | $0 (0 RMB) | 555 (3441) | 1230 (7626) | 492 (3050) | Assumption |
N95 purchase cost doubled | $1.58 (8 RMB) | 1313 (8141) | 1988 (12326) | 825 (5115) | Assumption |
N95 purchase cost halved | $0.40 (2 RMB) | 167 (1035) | 842 (5220) | 321 (1984) | Assumption |