Table J.4.

Numerical illustration of proportional allocation under Scenario IVa ^, b ^, c

MS	Strata	Stratum capacity	Proportion	Cumulative proportion	Allocation proportion (πN.Epi.K)	Samples per quarter (XN.Epi.K)	Sample unit available (YN.Epi.K)	Samples takenc
Country X	P	66,000,000	0.1346	0.1346	0.2075	10	13	13
Country X	G	65,000,000	0.1326	0.2672	0.2044	10	6	6
Country X	M	54,000,000	0.1101	0.3773	0.1698	8	7	7
Country X	Q	46,000,000	0.0938	0.4711	0.1447	7	11	11
Country X	O	46,000,000	0.0938	0.5649	0.1447	7	3	3
Country X	D	41,000,000	0.0836	0.6485	0.1289	6	5	5
Country X	K	39,000,000	0.0795	0.7280			2	2
Country X	C	27,000,000	0.0551	0.7831			6	1
Country X	E	24,000,000	0.0489	0.8320			3	0
Country X	A	22,000,000	0.0449	0.8769			4	0
Country X	F	19,000,000	0.0387	0.9156			2	0
Country X	L	16000000	0.0326	0.9482			9	0
Country X	J	13,000,000	0.0265	0.9747			5	0
Country X	H	12,000,000	0.0245	0.9992			2	0
Country X	B	259,000	0.0005	0.9997			3	0
Country X	R	30,000	0.0001	0.9998			4	0
Country X	N	28,000	0.0001	0.9999			8	0
Country X	I	25,000	0.0001	1			7	0
Total	18	490,342,000	1	–	1	48	45	48

^aThe calculation is based on the conventions that the Total number of samples/isolates to be sampled in a year equals 170 and the Number of samples/isolates to be sampled per quarter equals 43, without accounting for any bacteria prevalence nor considering potential missingness (missing data).

^bColour legend:

Green Cells: Selected Stratum representing 60% of the total throughput, inhabitants or isolates collected in the MS.

Yellow Cells: Stratum for which the available samples/isolates is smaller than the number of samples/isolates that should be sampled.

Orange Cells: Stratum for which the available samples/isolates is larger than the number of samples/isolates that should be sampled.

^cFinal adjustments accounting for the prevalence of the bacteria and rate of recovery after storage are not addressed in this illustration.