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Table 3 Number of caregivers (%) answering correctly to each of the questions and effect (p-value) of belonging to one of the two groups which received the pamphlet or to one of the two groups which attended an information session

From: Informed consent procedure in a double blind randomized anthelminthic trial on Pemba Island, Tanzania: do pamphlet and information session increase caregivers knowledge?

 Caregiver groupP-value for the effect of pamphletP-value for the effect of info session
ControlPamphletInfo sessionInfo session + pamphlet
Multiple choice questions
What is hookworm?30 (46%)33 (52%)53 (86%)52 (81%)0.990.006
Why is it bad?24 (37%)26 (41%)35 (58%)46 (72%)0.510.006
Can one be treated?52 (80%)54 (86%)52 (84%)54 (86%)0.720.53
Why are we doing this study?25 (39%)31 (49%)35 (58%)34 (53%)0.990.13
Who decides if your child participates?59 (91%)57 (91%)60 (97%)61 (95%)0.990.27
What if your child still has hookworm?55 (85%)44 (71%)50 (83%)54 (84%)0.510.53
Can you give up participating?27 (43%)21 (33%)19 (31%)23 (36%)0.720.31
What about payment?52 (81%)47 (76%)57 (92%)61 (97%)0.900.02
Is mebendazole safe?25 (40%)22 (36%)20 (33%)19 (30%)0.870.53
Who can see your child’s information?24 (37%)21 (33%)32 (53%)30 (47%)0.820.02
True or false questions (What will your child have to do if he/she participates?)
Provide several stool samples63 (97%)61 (97%)62 (100%)63 (98%)0.720.76
Provide one stool sample17 (26%)23 (37%)29 (47%)24 (38%)0.990.09
Provide a urine sample16 (25%)20 (32%)35 (56%)32 (50%)0.990.006
Provide a small blood sample54 (83%)56 (89%)60 (97%)61 (95%)0.720.02
Pay for the treatment52 (80%)48 (76%)59 (95%)57 (89%)0.720.02
Tell us how he/she feels after treatment65 (100%)55 (87%)60 (97%)61 (95%)0.510.53
Allow a doctor/nurse to examine him/her63 (97%)59 (94%)61 (98%)63 (98%)0.510.35
  1. The p-values refer to the estimated effect of providing a pamphlet, and of the information sessions. They were calculated using logistic regression with a random effect for class. The effects of pamphlet and information session were assumed to be additive: there was no evidence for any interactions between pamphlet and information session. The p-values have been adjusted for multiple comparison using the Benjamini-Hochberg procedure