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Table 2 Numbers (%) of containers with lost discs in each post-intervention survey

From: Effectiveness of a novel long-lasting pyriproxyfen larvicide (SumiLarv®2MR) against Aedes mosquitoes in schools in Yangon, Myanmar

Container na (baseline) Mean volume (range) (l) December January March Mayb
Type Barrel 7 135.7 (100–200) 0 (0) 0 (0) 3 (42.8) 4 (57.1)
Bucket 5 60.0 (5–100) 0 (0) 2 (40.0) 4 (80.0) 4 (80.0)
Cement drum 43 130.2 (50–300) 0 (0) 25 (58.1) 31 (72.1) 34 (79.1)
Cement tank 6 650.0 (100–1000) 0 (0) 1 (16.6) 3 (50.0) 3 (50.0)
Ceramic jar 1 50.0 (50) 0 (0) 0 (0) 1 (100.0) 1 (100.0)
Discarded 2 5.5 (1–10) 0 (0) 1 (50.0) 2 (100.0) 2 (100.0)
Spiritual bowl 10 1.0 (1) 0 (0) 7 (70.0) 9 (90.0) 10 (100.0)
Toilet bowl 18 20.0 (20) 0 (0) 17 (94.4) 18 (100.0) 18 (100.0)
Size Large (>200 l) 7 621.4 (250–1000) 0 (0) 1 (14.3) 3 (42.8) 3 (42.9)
Medium (10–200 l) 74 92.2 (10–200) 0 (0) 44 (59.5) 58 (78.4) 62 (83.8)
Small (<10 l) 11 1.0 (1) 0 (0) 8 (72.7) 10 (90.1) 11 (100.0)
Place Indoor 30 22.3 (1–100) 0 (0) 27 (90.0) 29 (96.7) 30 (100.0)
Outdoor 62 169.5 (1–1000) 0 (0) 26 (41.9) 42 (67.7) 46 (74.2)
Total   92 121.5 (1–1000) 0 (0) 53 (57.6) 71 (77.2) 76 (82.6)
  1. aNumber of containers that had water continuously from November (after removing 19 containers that lost water or disappeared by December)
  2. bAlthough six new containers with discs appeared in May, they were excluded because they were not original containers that received discs in November