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Table 4 Intervention effects by socio-economic status of respondents

From: The impact of a hybrid social marketing intervention on inequities in access, ownership and use of insecticide-treated nets

Ma Low (0–1) Medium-low (2) Medium (3) High (4+) Test for interactionsc
  (1) Comp. (n = 363) (2) Inter. (n = 492) (3) Comp. (n = 344) (4) Inter. (n = 433) (5) Comp. (n = 234) (6) Inter. (n = 369) (7) Comp. (n = 245) (8) Inter. (n = 506) (9) Test statistic (10) p
Knowledge of malaria           
   Mosquito bites cause malaria 52.0% 71.1% 56.7% 73.9% 55.4% 72.0% 69.5% 85.3% 0.60 0.896
Knowledge of nets and treatment           
   Familiar with mosquito nets 86.3% 95.0% 92.6% 95.3% 94.5% 95.6% 95.3% 96.8% 6.92 0.074
   Ever heard of insecticide treatment 6.9% 42.2% 11.6% 47.9% 17.7% 56.4% 25.7% 63.2% 5.63 0.131
   ITN kills or repels mosquitoes 4.6% 32.5% 8.4% 38.2% 12.9% 43.4% 19.2% 47.0% 10.25 0.017
   Know that ITN needs re-treatment 0.3% 14.4% 0.0% 19.7% 2.3% 20.9% 7.2% 26.3% 29.94 0.000
   No disadvantages to ITN 3.1% 17.3% 4.9% 25.6% 11.0% 31.6% 13.8% 27.8% 12.22 0.007
   Ever heard of PowerNET 4.9% 63.7% 6.4% 65.8% 9.7% 69.2% 25.0% 76.4% 18.84 0.000
   Ever heard of POWERCHEM 0.0% 16.0% 0.6% 19.0% 1.4% 23.3% 5.0% 29.4% 16.22 0.001
Access to mosquito nets           
   Access to mosquito nets (in minutes) 282.76 132.49 216.73 138.10 198.85 147.47 171.93 107.90 8.85 0.000
   Access to nets in 15 minutes or less 4.4% 26.4% 5.6% 22.4% 9.4% 28.5% 17.7% 38.1% 9.80 0.020
Beliefs about malaria protection           
   One can protect oneself from malaria 52.6% 69.3% 53.1% 72.8% 61.7% 77.6% 64.2% 83.5% 1.86 0.601
   One can protect by using a net 11.4% 34.9% 12.8% 34.8% 20.5% 35.8% 30.6% 44.9% 12.98 0.005
   One can protect by using an ITN 0.4% 5.1% 0.6% 7.6% 0.4% 11.2% 2.2% 11.1% 4.84 0.184
Behaviour           
Number of mosquito nets in household 0.15 0.16 0.10 0.23 0.22 0.42 0.57 0.88 6.86 0.000
Number of ITNs owned by household 0.07 0.10 0.03 0.15 0.04 0.27 0.05 0.51 27.48 0.000
   Ever had ITN in household 0.0% 6.8% 0.0% 12.0% 2.0% 21.0% 4.3% 26.8% 12.25 0.007
   Ever bought PowerNET 0.0% 6.8% 0.0% 12.3% 2.0% 22.2% 4.6% 29.5% 12.22 0.007
   Ever bought POWERCHEM 0.0% 1.9% 0.0% 4.6% 0.4% 9.4% 1.7% 11.1% 5.66 0.129
   Usually sleeps under a net 1.1% 6.9% 2.1% 9.5% 7.6% 20.2% 17.9% 30.4% 7.76 0.051
  1. a Means and proportions adjusted for age of respondent, sex of respondent, urban/rural residence; education, marital status, and number of children. b Not adjusted for marital status (divorced/separated/windowed). c Test statistic depends on whether adjusted mean or adjusted proportion was estimated: for adjusted means the test statistics used an F-test was used with 7 and 2971 df for the between group differences and with 3 and 2971 df for the interaction effects, for adjusted proportions a likelihood ratio test was used following a χ2 distribution with 7 df for the between group differences and 3 df for the interaction effect.