Still haven't provided me with your information as to why this is an extremely poor study but I will do my best to answer your questions as best I can
1.What was the active treatment?
Carageenan nasal spray several times per day- in the smaller pilot this was more frequent but in the larger study it was reduced 4x daily and ivermectin 12mg weekly
- What was the control group?
Both groups used standard PPE while one group used IVERCAR. There doesn't seem to be info on whether a placebo was used. Either way, they weren't given ivermectin
- How did the authors assign participants to the treatment group?
prospective, observational, not randomized trial
The numbers aren't equal as people have either elected to take or not take.
- Were there any differences between the treated and control group?
Yes. There is a table of demographics for the smaller pilot study if you look at the paper. Data wasn't collected for the larger trial. In the smaller study (200+ people) there were differences but in tiny numbers.
- Did the authors attempt to control (i.e., statistically adjust) for these differences?
No but even with these tiny differences there is sucha strong signal for iver
- What methods were used to analyse if there was a difference in infection rate between groups?
Patients in the PPE group and IVECAR groups were evaluated at 7 and 14 days completing symptom questionnaires ( including the reporting of any adverse effects from the treatment), physical examinations and CoVid-19 testing of nasopharyngeal secretions (PCR or rapid test) at each time point. Both groups continued to adhere to standard PPEs and were evaluated at 7, 14, 21 and 28 days from the commencement of the study. Infection rates were reported for each group,
- Was the study adequately powered?
COVID-19 transmission rates in both arms were compared by chi squared test. Transmission rate in the treated group is statistically significantly lower in the treated group (p < 0.0001).