- For more help using Joinpoint check the Surveillance Research Program Web site for Joinpoint: Frequently Asked Questions.

### Citation & References

1. Is there a suggested citation for Joinpoint?

2. Are there any reference papers that can help me understand the methodology?

### Software Updates and Installation

3. What are the most recent changes to the Joinpoint program?

4. How can I replicate previous results with a newer version of Joinpoint?

5. Can Joinpoint run on a Macintosh PC?

### Model Estimation and Selection Methods

7. Describe the permutation test used here.

a. How many permuted data sets should I use?

b. What does the *p*-value mean for Joinpoint?

c. Why are new significance levels being used in Version 3.0 and succeeding releases?

8. What is the Bayesian Information Criterion method for selecting the best model?

10. Should I use the linear or log-linear model?

12. Does the test of parallelism of two series require the series to be uncorrelated?

14. Can the Joinpoint software estimate the autocorrelation parameter?

15. Why did the default settings for Grid Search change?

16. Why is the Hudson's method disabled?

17. What is Tau?

18. Why would I choose Data Dependent Selection as a Model Selection Method?

19. What happened to the Clustering controls on the Advanced Analysis Tools Tab?

### APC and AAPC

21. What is an APC?

22. What is an AAPC?

24. Can we compare AAPCs for two independent groups?

25. What are the relative advantages and disadvantages of reporting an AAPC over APCs?

27. Which Method is better to use for the Empirical Quantile CI calculations?

28. Why is the Empirical Quantile Confidence Interval option labeled as "Alpha"?

### Applications of Joinpoint

34. Can Joinpoint be used to model proportions or percents?

35. How does the Joinpoint software deal with zeros in the dependent variable?

36. Can I use Joinpoint to project or extrapolate into the future?

37. What type of SEER*Stat sessions are compatible?

### Using Joinpoint Results

39. How do I import Joinpoint's graphs into other software such as Word, Excel, or PowerPoint?

40. How do I print Joinpoint results?

41. How do I save Joinpoint results to PDF or Word?

42. How do I export Joinpoint results to a text file or to Excel?

43. How do I export high resolution graphs?

### Data Sources

44. When I use Excel as my data source, why do I get "####" in the data?