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Table 4 Vector sporozoite rate, biting rate and entomological inoculation rate for 2018 and 2019 combined

From: Entomological impact of mass administration of ivermectin and dihydroartemisinin-piperaquine in The Gambia: a cluster-randomized controlled trial

Parameter

Methods

Control, % (n/N)

Intervention, % (n/N)

Adj, IRR (95% CI)

P-value

Biting rate, %

HLC

3.4 (4898/1440)

2.2 (2929/1344)

0.78 (0.23, 2.77)

0.701

Parameter

Methods

Control, % (n/N)

Intervention, % (n/N)

Crude OR (95% CI)

P-value

Sporozoite rate, %

CDC-LT and HLC

1.1 (68/6001)

0.8 (31/3939)

0.69 (0.46, 1.06)

0.091

EIR

HLC

56.9 (4898/360) × (29/2498) × 360

20.8 (2929/360) × (13/1835) × 360

0.36 (0.19, 0.70)

0.003

  1. EIR Entomological inoculation rate
  2. Biting rate: n number of mosquito collected; N number of capturers
  3. Sporozoite rate: n number of mosquito positive for sporozoite; N number of mosquito processed for sporozoite