Do vaccines increase the risk of serious health problems?

Data Preparation

I downloaded the data from the link in the article and imported into Exploratory.

I converted the # covid shots column to numeric by converting "6+" to 6.

The Health condition Choice column has the FIRST health condition if a child has health problems. Meaning if it is NA, the child is healthy. In this survey, 57% of children are healthy, and 43% of children are not.

I created a new logical column Has Health Problem based on this column.

Relationship between the # of vaccines and serious health problems.

In the Correlation mode for the Has Health Problem column. you can see Total # vaccine shots, # covid shots, and K-shot(Vitamin K shot) have correlations with the Has Health Problem column. AUC values are not so high, but the relationships are statistically significant.

I ran the multiple logistic regression analysis for the Has Health Problem column. I thought the following columns are the possible factors so I picked them for the predictor variables.

• Gender
• Race
• K-shot
• # covid shots
• Total # vaccine shots

The result is the following. Total # vaccine shots, # covid shots, and K-shot are still significant even on the multiple logistic regression analysis.

How many vaccines before the serious health problem appeared?

This chart shows how many vaccines the child got before the serious health problem appeared. The data includes children with serious health problems, parents who think the vaccination is the cause, and parents who remember how many.

It depends on the type of the disease, but in most cases, it is likely that you have more chances to have a health problem if you had more vaccine shots.

When did the parent notice the symptom of the serious health problem after the most recent vaccination?

This chart shows when the parent noticed the symptom after the most recent vaccination. The data includes children with serious health problems, parents who think the vaccination is the cause, and parents who remember when.

Again, it depends on the type of the disease, but it takes longer than 6 months to notice for some diseases such as ADHD, Asthma, etc.

Summary

If you have more vaccine shots, you will have more chances to have serious health problems. It may take more than 6 months until you notice the problem.