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Table 2 Distribution of microscopic and submicroscopic parasitaemia and fever

From: Submicroscopic malaria infection is not associated with fever in cross-sectional studies in Malawi

Characteristic Microscopic infections Submicroscopic infectionsa No parasitaemia Feverb No fever
Total 1570 1517 13563 1500 15150
District, N (row %)
 Blantyre 193 (3.6) 309 (5.8) 4831 (90.6) 361 (6.8) 4972 (93.2)
 Chikhwawa 966 (17.6) 789 (13.5) 4075 (69.9) 652 (11.2) 5178 (88.8)
 Thyolo 411 (7.5) 419 (7.6) 4657 (84.8) 487 (8.9) 5000 (9.1)
Age, Median (IQR) 10 (15–25) 14 (8–26) 13 (6–29) 12 (4–30) 13 (6–28)
Age group, N (row %)
 6 months–5 years 357 (9.2) 216 (6.5) 3320 (85.3) 492 (12.6) 3401 (87.4)
 6–15 years 836 (15.4) 630 (11.6) 3966 (73.0) 362 (6.7) 5070 (93.3)
 16 year and older 377 (5.1) 671 (9.2) 6277 (85.7) 646 (8.8) 6679 (91.2)
SES quartile, N (row %)
 Lowest 524 (13.5) 443 (11.4) 2914 (75.1) 420(10.8) 3461 (89.2)
 Low 459 (11.4) 397 (9.9) 3159 (78.7) 381 (9.5) 3634 (90.5)
 Medium 399 (9.4) 389 (9.1) 3469 (81.5) 366 (8.6) 3891 (91.4)
 High 161 (3.8) 270 (6.3) 3867 (89.9) 308 (7.2) 3990 (92.8)
Season, N (row %)
 Rainy 1001 (2.5) 844 (10.6) 6148 (76.9) 863 (10.8) 7130 (89.2)
 Dry 569 (6.6) 673 (7.8) 7415 (85.7) 637 (7.4) 8020 (92.6)
  1. IQR: interquartile range
  2. aSubmicroscopic infection was defined as a positive result by real-time PCR targeting P. falciparum lactate dehydrogenase gene and a negative malaria microscopy result
  3. bFever defined as at least one of these three measures: reported fever in the past 2 weeks, reported fever in the past 48 h and temperature ≥ 37.5 °C measured at the time of the interview and specimen collection