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Table 4 Cluster analysis of secondary outcomes (cascada) among parents of children aged 9-60 months (t-test of difference between 18 intervention and 14 control sites, cluster analysis as in Tables 2 and 3).

From: Evidence-based discussion increases childhood vaccination uptake: a randomised cluster controlled trial of knowledge translation in Pakistan

  Intervention clusters Control clusters Outcome in primary (cluster) analysis (t-test) GEE adjusting for baseline differences
Respondent could mention an illness preventable by mean 0.74 2368/3153
mean 0.74
1437/2431
mean 0.58
Difference 0.17, 95% 0.067-0.272
t = 3.369, 30 df p = 0.002
Difference 0.121
95% 0.055-0.189 (1)
Do you think it's worthwhile to vaccinate children? (attitude) 3006/3161
mean 0.95
2116/2475
mean 0.84
Difference 0.11, 95% 0.021-0.197
t = 2.543, 30 df p = 0.016
Difference 0.054
95% 0.013-0.105 (1)
Do your neighbours think it's worthwhile to vaccinate children? (subjective norm) 2842/3166
mean 0.89
1884/2475
mean 0.74
Difference 0.15, 95% 0.039-0.260
t = 2.755, 30 df p = 0.010
Difference 0.095
95% 0.011-0.182 (1)
How much time are you prepared to spend to take a child from your household to be vaccinated? Willing to take some time (intention) 2954/3088
mean 0.95
2037/2317
mean 0.84
Difference 0.11, 95% 0.002-0.227
t = 2.086, 30 df p = 0.046
Difference 0.073
95% 0.015-0.156 (2)
Mother included in decisions about vaccination (agency) 1834/3131
mean 0.59
1345/2434
mean 0.54
Difference 0.04, 95% -0.024-0.108
t = 1.299, 30 df p = 0.204
Difference 0.043
95% -0.009-0.097 (NS) (3)
Have you discussed vaccination for children in the family? (discussion) 1584/3155
mean 0.49
826/2459
mean 0.31
Difference 0.19, 95% 0.054-0.318
t = 2.868, 30 df p = 0.007
Difference 0.155
95% 0.032-0.270 (2)
  1. Initial model: intervention, willingness to travel, access, knowledge of preventable disease.
  2. (1) Final model: intervention, willingness to travel, access.
  3. (2) Final model: intervention, knowledge of preventable disease.
  4. (3) Final model: intervention, knowledge of preventable disease, access.