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Table 2 Plasmodium falciparum parasitaemia stratified by age, sex, socioeconomic status and setting, mean parasitaemia and results from bivariate negative binomial regression models on Plasmodium falciparum parasitaemia

From: Disparities of Plasmodium falciparum infection, malaria-related morbidity and access to malaria prevention and treatment among school-aged children: a national cross-sectional survey in Côte d’Ivoire

Variable

Total examined

Positive for P. falciparuminfection

P. falciparumparasitaemia categories (parasites/μl of blood)

Negative binomial regression model for P. falciparumparasitaemia (parasites/μl of blood)

   

Geometric mean parasitaemia

<50

50-499

500-4,999

5,000-49,999

≥50,000

  
    

n (%)

n (%)

n (%)

n (%)

n (%)

IRR (95% CI)

p-value

Age group (years)

          

 5-10

3,486

2,397

541.8

1,212 (34.8)

979 (28.1)

1,141 (32.7)

151 (4.3)

3 (0.1)

1.00

 

 11-16

1,636

1,142

421.0

564 (34.5)

539 (33.0)

475 (29.0)

58 (3.6)

0 (0.0)

0.78 (0.67, 0.90)

0.001*

Sex

          

 Male

2,714

1,942

511.3

875 (32.2)

814 (30.0)

915 (33.7)

109 (4.0)

1 (0.0)

1.00

 

  Female

2,408

1,597

485.4

901 (37.4)

704 (29.2)

701 (29.1)

100 (4.2)

2 (0.1)

1 (0.87, 1.14)

0.950

Socioeconomic status

          

 1

1,076

855

520.1

268 (24.9)

357 (33.2)

405 (37.6)

45 (4.2)

1 (0.1)

1.00

 

 2

1,011

755

466.3

294 (29.1)

342 (33.8)

335 (33.1)

40 (4.0)

0 (0.0)

0.90 (0.73, 1.11)

0.314

 3

946

664

515.2

312 (33.0)

283 (29.9)

313 (33.1)

37 (3.9)

1 (0.1)

0.95 (0.77, 1.18)

0.642

 4

966

595

524.8

402 (41.6)

244 (25.3)

278 (28.8)

42 (4.4)

0 (0.0)

0.81 (0.66, 1.01)

0.061

 5

1,123

670

475.4

500 (44.5)

292 (26.0)

285 (25.4)

45 (4.0)

1 (0.1)

0.89 (0.72, 1.09)

0.265

Setting

          

 Rural

3,958

2,870

495.7

1,239 (31.3)

1241 (31.4)

1319 (33.3)

157 (4.0)

2 (0.1)

1.00

 

 Urban

1,164

669

515.6

537 (46.1)

277 (23.8)

297 (25.5)

52 (4.5)

1 (0.1)

1.02 (0.87, 1.20)

0.800

  1. *Statistically significant (p <0.05).
  2. IRR: incidence rate ratio.
  3. Socioeconomic status: from less wealthy (1) to wealthiest (5).