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Table 2 Prevalence of malaria infections in the five districts

From: Prevalence and drivers of malaria infection among asymptomatic and symptomatic community members in five regions with varying transmission intensity in mainland Tanzania

Variable

Ludewa

Buhigwe

Muheza

Kyerwa

Nyasa

Total

Total enrolled, N

611

1453

1255

4454

2455

10,228

RDTs positive, n (%)

215/611 (35.2)

482/1453 (33.2)

271/1255 (21.6)

1979/4454 (44.4)

568/2455 (23.1)

3515/10,228 (34.4)

Sex, n (%)

 Female

113/362 (31.2)

273/914 (29.9)

134/720 (18.6)

1089/2641 (41.2)

323/1526 (21.2)

1932/6163 (31.3)

 Male

102/249 (41.0)

209/539 (38.8)

137/535 (25.6)

890/1813 (49.1)

245/929 (26.4)

1583/4065 (38.9)

 P-value

0.013

< 0.001

0.003

< 0.001

0.003

< 0.001

Age group, n (%)

 < 5 years

32/96 (33.3)

78/260 (30.0)

21/160 (13.1)

452/835 (54.1)

63/338 (18.6)

646/1689 (38.3)

 5–9 years

62/120 (51.7)

119/325 (36.6)

61/243 (25.1)

472/773 (61.1)

114/394 (28.9)

828/1855 (44.6)

 10–14 years

60/99 (60.6)

145/347 (41.8)

78/250 (31.2)

400/698 (57.3)

160/391 (40.9)

843/1785 (47.2)

 ≥ 15 years

61/296 (20.6)

140/521 (26.9)

111/602 (18.4)

655/2148 (30.5)

231/1332 (17.3)

1198/4899 (24.5)

P-value

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

Bednet ownership, n (%)

 Yes

195/555 (35.1)

350/1101 (31.8)

247/1154 (21.4)

1262/2867 (44)

517/2262 (22.9)

2557/7940 (32.2)

 No

20/56 (35.7)

132/352 (37.5)

24/101 (23.8)

717/1587 (45.2)

51/193 (26.4)

945/2288 (41.3)

 P-value

0.931

0.048

0.581

0.455

0.259

< 0.001

Slept under the bednet last night, n (%)

 Yes

195/555 (35.1)

349/1094 (31.9)

242/1145 (21.1)

1258/2849 (44.2)

517/2256 (22.9)

2547/7900 (32.2)

 No

20/56 (35.7)

133/359 (37.1)

29/110 (26.4)

721/1605 (44.9)

51/199 (25.6)

965/2328 (41.5)

 P-value

0.931

0.072

0.203

0.621

0.385

< 0.001

History of fevera n (%)

 Yes

61/72 (84.7)

173/338 (51.2)

150/246 (61.0)

1187/1342 (88.5)

55/104 (52.9)

1626/2102 (77.4)

 No

154/539 (28.6)

309/1115 (27.7)

121/1009 (12.0)

792/3112 (25.5)

513/2351 (21.8)

1889/8126 (23.2)

 P-value

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

Measured feverb, n (%)

 Yes

4/5 (80.0)

12/25 (48.8)

13/21 (61.9)

108/136 (79.4)

12/51 (23.5)

149/238 (62.6)

 No

211/606 (34.8)

470/1428 (32.9)

258/1234 (20.9)

1871/4318 (43.3)

556/2404 (23.1)

3366/9990 (33.7)

 P-value

0.035

0.112

< 0.001

< 0.001

0.946

< 0.001

  1. N population size, RDTs rapid diagnostic tests, n number of participants
  2. aHistory of fever in the past 2 days
  3. bFever measured at presentation, characterized as axillary temperature ≥ 37.5 °C