ABCDEFGHIJKLMNOPQRSTUVWXYZAA
1
Starting Assumptions (notes below)
2
Initial disease burdenBaseline trend line
Project timeline (to t_1)
Post-project (to t_2)Total timelineProject multiplier
3
1400-152510350.1
4
5
Derivations/Results
6
Baseline burden at t_1Baseline burden at t_2
Project-adjusted burden
Project trend line
7
1025875102.5-51.9
8
9
Baseline burdenBurden during projectBurden post-projectTotal project burdenTotal DALYs saved(in thousands)
10
39812.518781.25102519806.2520006.25
11
12
Initial disease burden: Given in thousands of DALYs (DALYs x 10^3), based on the WHO number for the US 2019 infectious respiratory disease burden.
13
Baseline trend line: The burden of infectious respiratory disease already trends downward. The slope of this line was calculated by comparing the US 2010 burden with the 2000 burden in thousands of DALYs.
14
Project timeline (to t_1): Assumption for timeline over which project will be active, ie over which indoor air safety interventions will be actively implemented. Endpoint defines t_1.
15
Post-project (to t_2): Time after project, once interventions have been fully implemented. Assumes stable disease burden. Endpoint defines t_2.
16
Total timeline: post-project time added to project timeline; total time over which disease burden difference is calculated.
17
Project multiplier: Assumption for amount by which interventions can decrease disease burden. Currently set to 0.1 to reflect the assumption that interventions can reduce burden by 90%, leaving them at 10% of the counterfactual level.
18
Baseline burden: counterfactual disease burden after relevant time passes, assuming no changes from current trend.
19
Project-adjusted burden: The project multiplier applied to the baseline burden at the end of the project timeline (t_1), or in this case, 10% of the baseline.
20
Project trend line: Trend line slope over the active course of the project. Calculated by comparing the project-adjusted burden with the initial disease burden over a 10-year period (same period as was used to calculate the baseline trend).
21
DALYs saved: Integration over the relevant trend line using ExcelWorks' QUADF function.
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100