Table 1.
Comparison of manual, digital, and conventional parasite density estimations
| Slide | Number of parasites counted per slide | WC | WCC | Parasite density, as parasites/μl | |||
| Manual counts | Digital counts | Manual counts | Digital counts | Conventional counts | |||
| BF3A | 5022 | 5071 | 323 | 8050 | 125161 | 126383 | 109725 |
| BF5A | 4516 | 4540 | 162 | 6400 | 178410 | 179358 | 152178 |
| BF6A | 10686 | 10438 | 118 | 5100 | 461853 | 451134 | 271600 |
| BF7A | 9373 | 9515 | 316 | 9800 | 290682 | 295085 | 200083 |
| BF8A | 344 | 289 | 125 | 2510 | 6908 | 5803 | 5834 |
| BF9A | 634 | 619 | 202 | 5020 | 15756 | 15383 | 11359 |
| BF10A | 1003 | 870 | 353 | 5400 | 15343 | 13309 | 18638 |
| BF13A | 2446 | 2158 | 290 | 9070 | 76501 | 67493 | 50110 |
| BF18A | 22477 | 21956 | 534 | 11100 | 467219 | 456389 | 429400 |
| AMI3a | 424 | 438 | 142 | 8000 | 23887 | 24676 | 17500 |
| AMI26 | 127 | 140 | 200 | 8000 | 5080 | 5600 | 3975 |
| AMI32 | 5819 | 6149 | 261 | 8000 | 178360 | 188475 | 125000 |
| BF7Ab | 8059 | 8251 | 260 | 9800 | 303762 | 310999 | 200083 |
| BF8Ab | 291 | 277 | 109 | 2510 | 6701 | 6379 | 5834 |
| BF9Ab | 369 | 333 | 132 | 5020 | 14033 | 12664 | 11359 |
| BF13Ab | 1373 | 1356 | 140 | 9070 | 88951 | 87849 | 50110 |
| BF15A | 3904 | 3914 | 152 | 6400 | 164379 | 164800 | 144050 |
| BF16A | 14265 | 14273 | 162 | 5100 | 449083 | 449335 | 313062 |
| BF17A | 6807 | 6999 | 199 | 9800 | 335219 | 344674 | 238467 |
| AMI3b | 281 | 272 | 119 | 8000 | 18891 | 18286 | 17500 |
| Total | 98220 | 97858 | 3226178 | 3224075 | 2375867 | ||
| Mean | 215 | ||||||
Data are kurtosis/skewness (K/Sk) and resultant factor RN, used to set digital particle counting algorithm for each slide; number of particles per slide counted manually and digitally, and compared by absolute % discrepancy, rank correlation, and signed rank test.