Bulletin of the World Health Organization

Determining health-care facility catchment areas in Uganda using data on malaria-related visits

Kate Zinszer, Katia Charland, Ruth Kigozi, Grant Dorsey, Moses R Kamya & David L Buckeridge

Volume 92, Number 3, March 2014, 178-186

Table 2. Parishes, population and malaria cases in health-care facility catchment areas, by catchment area definition, Uganda, 2012

Catchment area definition Health-care facility catchment area
Aduku
Kamwezi
Kasambya
Kihihi
Nagongera
Walukuba
No. of parishes Catchment population No. of confirmed malaria cases No. of parishes Catchment population No. of confirmed malaria cases No. of parishes Catchment population No. of confirmed malaria cases No. of parishes Catchment population No. of confirmed malaria cases No. of parishes Catchment population No. of confirmed malaria cases No. of parishes Catchment population No. of confirmed malaria cases
Straight-line distance,a km
5 1 5 684 507 2 9 089 2135 2 14 486 3162 6 20 966 2555 3 22 026 2642 21 172 600 3502
10 6 32 598 1496 12 40 508 2907 5 35 092 4078 16 59 528 3522 16 93 007 4037 28 244 546 3628
20 27 139 962 1868 41 132 247 2907 18 113 946 4505 46 180 423 3845 66 358 412 4324 61 445 316 3653
30 72 266 648 1907 99 356 499 2907 44 206 739 4517 95 350 006 3855 139 711 399 4326 179 775 551 3718
Road network distance,b km
5 0 0 0 4 18 568 2898 2 14 486 3162 6 20 270 2613 2 15 720 2252 11 86 513 480
10 5 27 888 1353 6 22 034 2864 2 14 486 3162 11 42 701 3465 13 75 639 3732 19 156 834 3595
20 19 102 761 1811 18 63 488 2907 13 91 252 4475 22 85 097 3541 46 247 685 4263 39 307 017 3648
30 38 158 889 1856 26 90 743 2907 24 136 991 4516 43 167 690 3826 88 477 334 4273 102 486 053 3655
Cumulative case ratioc 8 40 848 1557 3 14 787 2855 9 66 794 4487 11 42 923 3758 18 110 422 4242 8 79 643 3449

a Catchment areas were defined as lying within a specified straight-line distance from the facility.

b Catchment areas were defined as lying within a specified road network distance from the facility.

c A parish was included in the catchment area if the upper limit of the 95% confidence interval for the cumulative case ratio for the parish (i.e. the ratio of observed to expected malaria-related visits from the parish) was one or greater.