Table 7.
Estimation of the date for placing the next order of asthma inhalers, revolving drug fund, Benin, 31 January 2013
| Medicines | Number of inhaler in stock (a) | Date begin (b) | Medicines ordered during the period (c) | Date end (d) | Number of inhalers remaining (e) | Consumption during the period (f = a + c-e) | Number of months during the period (g) | Average monthly consumption (h = f/g) | Estimation of the number of months covered by inhalers in stock (i = f/h) | Approximate date of placing next medicine order (i-8*) months since (d) |
|---|---|---|---|---|---|---|---|---|---|---|
| Beclometasone | 1 600 | 15/09/2012 | 3 000 | 31/01/2013 | 3 390 | 1 210 | 4.6 | 263 | 12,9 | 26/06/2013 |
| Salbutamol | 2 130 | 15/09/2012 | 2 250 | 31/01/2013 | 3 250 | 1 130 | 4.6 | 246 | 13,2 | 06/07/2013 |
*Ordering must be started as soon as the number of inhalers in stock is sufficient for only 8 months: 2 months for reserve stock and 6 months as turnaround time between ordering and arrival of inhalers.