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Table 1 Characteristics of study participants stratified by larviciding phase and intervention status

From: Do malaria vector control measures impact disease-related behaviour and knowledge? Evidence from a large-scale larviciding intervention in Tanzania

Variables Baseline First phase Second phase Third phase
  Control Control Larviciding Control Larviciding Larviciding
Individual-level characteristics (n) 26,338 13,818 3,096 4,749 7,366 9,170
Male sex 35.2% 35.5% 36.6% 36.3% 38.2% 39.4%
Age       
 Younger than 5 years of age 15.4% 13.3% 13.3% 13.2% 11.5% 10.0%
 Between 5 and 14 years of age 27.6% 27.9% 29.1% 28.4% 29.6% 31.2%
 Between 15 and 29 years of age 28.5% 29.5% 29.3% 28.2% 28.9% 29.1%
 Between 30 and 44 years of age 16.4% 17.3% 16.1% 18.4% 18.8% 18.4%
 Between 45 and 59 years of age 7.2% 7.2% 7.7% 7.6% 7.1% 7.3%
 Aged 60 years or above 4.9% 4.8% 4.5% 4.1% 4.1% 4.0%
Missing 0.1% 0.1% 0% 0% 0% 0%
Reported use of mosquito repellent 1.3% 4.2% 3.7% 2.5% 3.1% 3.3%
Reported use of coil 5.7% 8.4% 5.9% 5.9% 7.3% 5.8%
Interviewed during the rainy season 41.1% 47.5% 51.4% 51.8% 30.9% 38.3%
Previously surveyed participant (follow-up) 16.9% 31.0% 30.4% 32.4% 31.3% 27.5%
Head of household and house characteristics (N) 5,127 2,505 522 726 1,099 1,275
Male sex 64.2% 71.6% 71.6% 70.8% 73.3% 74.7%
Age       
 Younger than 30 years of age 8.2% 2.4% 2.9% 3.0% 1.7% 1.6%
 Between 30 and 49 years of age 48.1% 47.3% 43.9% 47.2% 50.8% 48.9%
 Between 50 and 64 years of age 31.1% 37.0% 42.3% 39.5% 36.6% 38.4%
 Aged 65 years or above 11.7% 13.1% 10.9% 9.9% 10.5% 10.6%
Missing 0.9% 0.2% 0% 0.3% 0.5% 0.5%
Occupation of the household head       
 Business/Government/Formal sector 59.3% 66.3% 65.7% 58.3% 69.5% 77.3%
 Farmer/Fisherman 2.2% 1.2% 1.5% 1.1% 0.9% 0.6%
 Informal sector 19.2% 20.0% 18.4% 25.3% 17.0% 12.0%
 Retired/No job/Domestic 17.9% 11.5% 13.8% 13.8% 11.7% 9.2%
Missing 1.4% 1.0% 0.6% 1.5% 0.8% 0.9%
Socio-economic status       
 Lowest quintile 31.9% 18.5% 21.5% 5.1% 9.1% 7.0%
 Second quintile 27.6% 24.2% 16.5% 19.6% 16.3% 14.8%
 Third quintile 13.9% 18.2% 19.2% 20.9% 15.0% 19.2%
 Fourth quintile 11.6% 21.5% 20.5% 26.9% 31.2% 28.3%
 Highest quintile 15.0% 17.5% 22.4% 27.5% 28.4% 30.7%
Education level of household head       
 Illiterate 6.2% 6.9% 4.2% 4.0% 2.9% 1.2%
 Primary 58.9% 43.5% 48.5% 37.5% 32.7% 35.0%
 Secondary 29.2% 44.2% 39.1% 55.9% 59.4% 59.8%
 Tertiary 3.6% 4.5% 7.1% 1.9% 4.3% 3.4%
 Other 0.3% 0% 0.4% 0% 0.1% 0%
Missing 1.8% 0.9% 0.8% 0.7% 0.6% 0.6%
House has window screens 23.7% 24.2% 45.6% 22.2% 30.3% 39.7%
House has whole ceiling 25.1% 29.5% 36.0% 44.5% 41.7% 34.8%