**
Archive 2006, 200 entries**

Also be sure to look at the list of weblog entries organized by topic and the archives for 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2005, 2004, 2003, 2002, 2001, 2000, and 1999.

December | November | October | September | August | July | June | May | April | March | February | January

**December 2006 (11 entries)**

200. Stats: What percentage of medical decisions are based on good evidence? (December 29, 2006)

199. Stats: Be sure to account for dropouts in your sample size calculation (December 29, 2006)

198. Stats: Cherry picking the literature (December 20, 2006)

197. Stats: Unusual advice about control charts (December 18, 2006)

196. Stats: Should (Can?) Statistical Consultants, be Independent? (December 14, 2006)

195. Stats: Using focus groups to bridge the gap between research and practice (December 14, 2006)

194. Stats: Evidence-based development of medical guidelines (December 13, 2006)

193. Stats: Mathematical and statistical challenges (December 13, 2006)

192. Stats: Perfect isn't quite good enough (December 12, 2006)

191. Stats: PharmaIQ talks (December 6, 2006)

190. Stats: When are two events worrisome? (December 4, 2006)

** November 2006 (15 entries)**

189. Stats: Manipulation of peer-review publications by pharmaceutical companies (November 21, 2006)

188. Stats: A simple Bayesian model for accrual (November 17, 2006)

187. Stats: The tension between scientific validity and ethical concerns (November 17, 2006)

186. Stats: The complexities of having a variable number of measures per patient (November 16, 2006)

185. Stats: Fitting a quadratic regression model (November 15, 2006)

184. Stats: The danger of using humor on a web page (November 14, 2006)

183. Stats: Incorporating risk factors into diagnostic test calculations (November 9, 2006)

182. Stats: Technical Articles and Reports by David Heiser (November 7, 2006)

181. Stats: Rebutting an expert reviewer (November 6, 2006)

180. Stats: Medline is a very busy place (November 6, 2006)

179. Stats: Materials for Signal Detection and Data Mining Strategies conference (November 6, 2006)

178. Stats: Therapeutic orphans (November 3, 2006)

177. Stats: Statistical concerns in research studies involving children (November 2, 2006)

176. Stats: Additions and improvements to my web pages (November 2, 2006)

** October 2006 (18 entries)**

174. Stats: Parametric tests for a ratio (October 27, 2006)

173. Stats: Searching for pediatric articles on Medline (October 26, 2006)

172. Stats: Adjusting a variable for age and sex (October 26, 2006)

171. Stats: I wasn't making up data, I was imputing! (October 25, 2006)

170. Stats: Is a 10% shortfall in sample size critical? (October 23, 2006)

169. Stats: A simple example of a mixed linear regression model (October 18 ,2006)

168. Stats: Academic freedom and the Institutional Review Board (October 17, 2006)

167. Stats: Ethical concerns about research in children (October 17, 2006)

166. Stats: Case studies for differences in research in children (October 16, 2006)

165. Stats: Mathematical derivation of the odds form of Bayes theorem (October 16, 2006)

164. Stats: Differences between children and adults (October 13, 2006)

163. Stats: Frank Harrell's Philosophy of Biostatistics (October 10, 2006)

162. Stats: My ten favorite books, #8 (March 24, 2006)

161. Stats: Calculations involving diagnostic tests using open source abstracts (October 5, 2006)

160. Stats: Book reviews for Statistical Evidence (October 5, 2006)

159. Stats: Ethics concerns about a placebo run-in (October 4, 2006)

158. Stats: Wikipedia entry on sample (October 2, 2006)

157. Stats: My second grant, part 3 (Model, Quality, October 2, 2006)

** September 2006 (15 entries)**

156. Stats: Improvements to weblog categories (September 25, 2006)

155. Stats: Is my confidence interval too wide? (September 21, 2006)

154. Stats: Two talks for PharmaIQ (September 19, 2006)

153. Stats: Resources for the use of Statistical Process Control in Healthcare (September 15, 2006)

152. Stats: Special issues for research involving children (September 15, 2006)

151. Stats: Pharmacogenetics Research Network (September 14, 2006)

150. Stats: Top ten studies in EBM, Part 4 (September 14, 2006)

149. Stats: Email discussion groups (September 13, 2006)

148. Stats: My second grant, part 2 (Model, Quality, September 13, 2006)

147. Stats: Ambiguous nature of the word "risk" (September 13, 2006)

146. Stats: Graphics options in R (September 12, 2006)

145. Stats: Bernadine Healy weighs in on EBM (September 11, 2006)

144. Stats: Postmodern thought and evidence based medicine (September 7, 2006)

143. Stats: Rules for rounding numbers (September 7, 2006)

142. Stats: Continuous monitoring of the number needed to harm (September 2, 2006)

** August 2006 (11 entries)**

141. Stats: Changing page breaks in SPSS (August 31, 2006, Model, Software)

140. Stats: More on the Wikipedia entry on Binomial Confidence Interval (August 29, 2006)

139. Stats: Citing statistical software in research papers (August 25, 2006)

138. Stats: More on the Wikipedia entry on Binomial Confidence Interval (August 22, 2006)

137. Stats: Wikipedia entry on Binomial Confidence Interval (August 21, 2006)

136. Stats: Quality control humor (August 20, 2006, Model, Quality)

135. Stats: An exact confidence interval for a binomial proportion (August 18, 2006)

133. Stats: A clumsy attempt at anonymization (August 15, 2006, Category: Privacy concerns)

132. Stats: American Statistical Association Traveling Course committee (August 15, 2006)

131. Stats: Sales figures for Statistical Evidence in Medical Trials (August 2, 2006)

** July 2006 (10 entries)**

129. Stats: Using a colloquial tone in a grant application (July 25, 2006, Plan, Grant)

128. Stats: My second grant (July 26, 2006, Model, Quality)

127. Stats: Selecting randomly from a list (July 18, 2006, Plan, Randomization)

125. Stats: Initial work on the KCALSI grant (July 17, 2006, Model, Quality)

124. Stats: Fraudulent images in research (July 12, 2006, Evidence, Corroboration)

122. Stats: Possible sources of funding for my grant (July 6, 2006, Model, Quality control)

121. Stats: Stopping rules for a Data Safety Monitoring Plan (July 5, 2006, Ethics, Early Stopping)

** June 2006 (25 entries)**

119. Stats: Some resources for Analysis of Means (June 30, 2006, Model, Quality control)

118. Stats: What is block randomization (June 30, 2006, Plan, Randomization)

117. Stats: Likelihood software for clinical trials (June 29, 2006, Model, Software)

116. Stats: The problem with ranking ordinal scales (June 29, 2006, Model, Ordinal data)

115. Stats: Resources for Item Response Theory (June 28, 2006, Model, Software)

114. Stats: Colors for R graphs (June 28, 2006)

113. Stats: Research on the web (June 27, 2006)

112. Stats: More on propensity score models (June 26, 2006, Model, Propensity score)

111. Stats: Slash and burn models (June 26, 2006, Model, Logistic regression)

110. Stats: Using a charge of fraud to achieve a political end (June 23, 2006, Evidence, Corroboration)

109. Stats: Withholding Personal Health Information from a patient (June 20, 2006, Ethics, Privacy)

108. Stats: Auditing for data entry errors (June 20, 2006)

107. Stats: Applications of the CUSUM chart (June 20, 2006, Model, Quality)

106. Stats: Philosophy of teaching (June 20, 2006)

105. Stats: Putting a human face on Evidence Based Medicine (June 20, 2006)

104. Stats: Ethics and the fiduciary obligation (June 19, 2006, Ethics, Overview)

103. Stats: (Seminar notes) Confidence intervals for a variance ratio (June 17, 2006)

102. Stats: (Seminar notes) Adjustments for multiple comparisons (June 17, 2006)

101. Stats: (Seminar notes) Missing values in a dose response model (June 17, 2006)

100. Stats: (Seminar notes) Issues in the analysis of mixed linear models (June 17, 2006, Model, Mixed)

99. Stats: (Seminar notes) Working with molecular biologists (June 17, 2006)

98. Stats: New entry in the Chance Wiki (June 7, 2006)

97. Stats: An amusing correlation (June 5, 2006, Model, Linear regression)

96. Stats: Seminar on control charts and adverse events (June 5, 2006, Model, Quality)

** May 2006 (19 entries)**

95. Stats: Why do we need research? (May 31, 2006)

94. Stats: Methods for haplotype analysis (May 31, 2006, Model, Large scale)

93. Stats: Can the p-value actually equal 1.0? (May 30, 2006, Evidence, Interpreting numbers)

92. Stats: Monitoring accrual rates (May 30, 2006, Model, Quality)

91. Stats: Relationship between the standard deviation and the sample size (May 26, 2006)

90. Stats: Upcoming talks about control charts (May 25, 2006, Model, Quality)

89. Stats: You won't have Steve Simon to kick around anymore (May 24, 2006, General)

88. Stats: Using APR-DRGs for risk adjustment (May 24, 2006, Evidence, Internal validity)

87. Stats: Another regular expression tip (May 23, 2006)

86. Stats: Lost files (May 23, 2006)

85. Stats: Using regular expressions to insert line breaks (May 18, 2006) (Model, Data management)

84. Stats: Interesting stuff for the month of May (May 30, 2006) (Teaching resources, General)

83. Stats: Searching high level sources first (May 17, 2006, Evidence, Searching)

82. Stats: No tolerance for ambiguity (May 10, 2006)

81. Stats: Using a web site to promote your book (May 10, 2006, Administrative details)

80. Stats: Always ask why (May 8, 2006)

79. Stats: Eighteenth Annual Applied Statistics in Agriculture Conference (May 4, 2006)

78. Stats: Data mining and drug safety (May 4, 2006, Model, Quality control)

77. Stats: What constitutes a conflict of interest? (May 4, 2006, Evidence, Corroboration)

** April 2006 (16 entries)**

76. Stats: A simple application of propensity scores (April 26, 2006, Model, Linear regression)

75. Stats: I want to write a grant (April 25, 2006, Model, Quality control)

74. Stats: Surviving Statistical Spitting Matches (April 25, 2006)

73. Stats: Giving credit where credit is due (April 19, 2006, Administrative details)

72. Stats: Abstainer errors in study of alcohol abuse (April 19, 2006, Evidence, Internal validity)

71. Stats: Univariate Model Based Clustering (April 18, 2006, Model, Large scale)

70. Stats: Placing the symbol X-bar in a document (April 17, 2006, Teaching resources, General)

69. Stats: Topic list is complete! (April 17, 2006, Administrative details)

68. Stats: Three new koans (April 17, 2006)

67. Stats: Interesting websites, publications and quotes for the month of April (updated April 12, 2006)

66. Stats: The Healthcare Cost and Utilization Project (April 11, 2006, Model, Large scale)

65. Stats: Examples of Pareto charts (April 5, 2006, Model, Quality)

64. Stats: Interpretation of the correlation coefficient (April 4, 2006, Model, Linear regression)

62. Stats: When is a co-authorship warranted? (April 4, 2006, Ethics, Overview)

61. Stats: What is a beta coefficient? (April 4, 2006, Model, Linear regression)

** March 2006 (23 entries)**

60. Stats: How many charts should I pull? (March 30, 2006, Category: Sample size justification)

59. Stats: Contradictory research (March 30, 2006)

58. Stats: Articles on Bayesian data analysis (March 30, 2006, Model, Bayesian)

57. Stats: Small sample size, yet again (March 29, 2006, Category: Sample size justification)

56. Stats: New koan page (March 29, 2006, Administrative details)

55. Stats: The role of a statistician on an IRB (March 29, 2006, Ethics, Overview)

54. Stats: Interesting websites, publications and quotes for the month of March (updated March 29, 2006)

53. Stats: Statistical koan #4 (March 26, 2006)

52. Stats: Examples of a fishbone diagram (March 24, 2006, Model, Quality control)

51. Stats: My ten favorite books, #9 (March 24, 2006, Teaching resources, Books)

50. Stats: Web seminar, Creating More Effective Graphics (March 24, 2006)

49. Stats: My ten favorite books, #10 (March 17, 2006, Teaching resources, Books)

48. Stats: Integrating internal and external evidence (March 17, 2006)

47. Stats: An introductory book on SPSS (March 16, 2006, Teaching resources, Books)

46. Stats: Statistical koan #3 (March 16, 2006, Teaching resources, General)

45. Stats: Post hoc comparisons (March 15, 2006)

44. Stats: Software for structural equations models (March 14, 2006, Model, Software)

43. Stats: Poisson regression? Maybe not! (March 10, 2006, Model, Poisson regression)

42. Stats: Propensity scores (March 10, 2006, Model, Linear regression)

41. Stats: More on the Emily Rosa experiment (March 10, 2006)

40. Stats: What is construct validity? (March 8, 2006, Model, Agreement)

39. Stats: Best EBM articles in 2005 (March 6, 2006)

38. Stats: Waiver of informed consent (March 3, 2006, Ethics, Informed consent)

** February 2006 (12 entries)**

37. Stats: Statistical koan #2 (Feburary 28, 2006, Teaching resources, General)

36. Stats: Statistical koans (February 27, 2006, Teaching resources, General)

35. Stats: Three dimensional bar and pie charts (February 21, 2006)

34. Stats: Difficulties in generalizing research (February 15, 2006, Evidence, External validity)

33. Stats: Meta-analysis and diagnostic tests (February 14, 2006, Model, Meta-analysis)

32. Stats: Checking a Chi-square test (February 13, 2006, Model, Logistic regression)

31. Stats: What makes a good book? A sense of humor. (February 13, 2006, Teaching resources, Books)

30. Stats: Interesting websites, publications and quotes for the month of February (February 13, 2006)

29. Stats: Reporting serious adverse events (updated February 3, 2006, Model, Quality control)

28. Stats: Economic evaluations (February 2, 2006, Model, Linear regression)

27. Stats: An Ensembl search (February 1, 2006)

26. Stats: Learning more about control charts (February 1, 2006, Model, Quality)

** January 2006 (25 entries)**

25. How do the various clustering algorithms work? (January 31, 2006)

24. Recent developments in searching for evidence (January 31, 2006, Evidence, Searching)

23. More lessons learned the hard way (January 31, 2006)

22. Stats: Interesting web sites, publications, and quotes for the month of January (January 31, 2006)

21. Real-life examples of survey mistakes (January 31, 2006, Plan, Survey)

20. A novel diagnostic test (January 26, 2006, Model, Diagnostic test)

19. A simple function for a Biplot in R (January 24, 2006, Model, Large scale)

18. Machine Learning tools in R (January 24, 2006)

17. Randomization tests for paired data (January 24, 2006, Model, Randomization)

16. Conditional Frailty Models (January 20, 2006)

15. Multicollinearity is not a violation of assumptions (January 20, 2006, Model, Linear regression)

14. Excluding zip codes with insufficient data (January 19, 2006, Model, Descriptive)

13. Davis Balestracci seminar (January 19, 2006, Model, Quality control)

12. Extending SPSS capabilities using Python (January 19, 2006, Model, Software)

11. The Journal of Statistical Software (January 18, 2006, Model, Software)

10. Categorizing my weblog entries (January 18, 2006, Administrative details)

9. Characterizing reasons for refusal (January 17, 2006, Evidence, External validity)

8. Handling dropouts in NNT/NNH calculations (January 16, 2006, Evidence, Interpreting numbers)

7. Haplotype analysis (January 13, 2006, Model, Genetic data)

6. First peek at the cover of my new book (January 12, 2006, General)

5. Where to go, where to go (January 11, 2006, General)

4. Extreme value distribution (January 9, 2006, Model, Theory)

3. An entry in Chance News (January 5, 2006, General)

2. The past year in my weblog (January 4, 2006, Administrative details)

. [Go to full topic list] [Read current weblog entries] This web page was written by Steve Simon, edited by Steve Simon, and was last modified on 04/01/2010.