1. Stata12 关联电子手册的方法：https://bbs.pinggu.org/thread-1180284-1-1.html

2. 英文操作系统 stata完美支持中文的方法 https://bbs.pinggu.org/thread-121859-1-1.html

Transferring data to/from Stata

• How can I convert files among SAS, SPSS and Stata?
• How can I read Excel files in Stata? (Stata 12)
• How can I read Stata 12 data files in Stata 11?
• How do I export Stata .dta files to comma-separated files?
• How do I export Stata .dta files to a SAS Xport file?
• How can I load, write, or view a dBASE file, Excel file or Access file using odbc?
• How can I convert a Stata file to an MLwiN file using Stata program stata2mlwin?
• How can I convert a Stata file to an Mplus file?
• Stata to HLM
  
  
  
  • Easiest: How do I convert a Stata file to HLM?
  • Harder: How can I convert a Stata file to an HLM file using HLM Windows interface?
  • Harder: How to separate a Stata single file into multiple data files for analysis in HLM software?
    
• How can I input a dataset quickly?
• How do I read a data file that uses commas/tabs as delimeters?
• How can I output a formatted ASCII file?
• How do I load large data sets (> 1GB) under 32-bit Windows? (from Stata FAQs)
  

Stata Graphical User Interface (for Windows)

• How do I make windows dock, pin, and float? (shown as a movie)
• How do I load window settings? (shown as a movie)
• How do I save window settings? (shown as a movie)
• How do I set other window preferences? (shown as a movie)
• How do I change the font (PC version)?
  

General Use and Data Management

• How can I anonymize patient IDs and still be able to decode them, if necessary?
• How can I sort data within rows independently for each observation?
• How can I create all pairs within groups?
• How do I copy Stata output and Stata graphs into Word?
• How can I save the contents of the results window?
• How can I make the results window hold more results?
• How do I update my copy of Stata?
• How do I check that the same data input by two people are consistently entered?
• How can I list observations in blocks?
• Can I do by and sort in one command?
• Why am I losing precision with large whole numbers (such as an ID variable)?
• How can I quickly recode continuous variables into groups?
• How do I standardize variables (make them have a mean of 0 and sd of 1)?
• How can I randomly assign observations to groups in Stata?
• How can I draw a random sample of my data?
• How can I read dates with both 2-digit abd 4-digit year?
• How can I "fill down"/expand observations with respect to dates and then update my dates?
• How can I count the number of days between two dates?
• How do I assign the values of one variable as the value labels for another variable?
• How can I detect duplicate observations?
• How can I access information stored after I run a command in Stata (returned results)?
• How can I identify cases used by an estimation command using e(sample)?
• How can I sample from a datasets with frequency weights?
• How do I document and search a Stata dataset?
• How can I create dyad IDs?
  

Files

• How can I generate automated filenames in Stata?
• How can I merge multiple files in Stata?
• How can I combine a large number of files?
  

Regression

• Why are R2 and F so large for models without a constant?
• What is dummy coding?
• What is effect coding?
• What are Pseudo R-Squareds?
• How do I interpret odds ratios in logistic regression?
• How do I interpret a regression model when some variables are log transformed?
• How are the likelihood ratio, Wald, and Lagrange multiplier (score) tests different and/or similar?
• Excel Tips
• How can I detect/address spatial autocorrelation in my data?
  

String variables

• How can I quickly convert many string variables to numeric variables?
• How can I turn a string variable containing dates into a date variable Stata can recognize?
• How can I extract a portion of a string variable using regular expressions?
  

Error messages

• How can I handle the matsize too small error?
• How can I handle the No Room to Add Observations error?
  

Missing values

• Can I quickly see how many missing values a variable has?
• How can I see the number of missing values and patterns of missing values in my data file?
• How can I quickly recode missing values into different categories?
• How can I use multiply imputed data where original data is not included?
  

Topics on R2

         Test Goodness of Fit (R2)  
       http://www.oocities.org/qecon2002/founda6.html
         
         FAQ: Why are R2 and F so large for models without a constant?

         http://www.ats.ucla.edu/stat/mult_pkg/faq/general/noconstant.htm

         
         FAQ: What are pseudo R-squareds?

         http://www.ats.ucla.edu/stat/mult_pkg/faq/general/Psuedo_RSquareds.htm

         R-square and Standardization in Regression

         http://www.people.vcu.edu/~nhenry/Rsq.htm

MLE 相关
       Q：MLE 过程中，参数 row 的取值范围是 0-1，而 theta 必须为正，但是如何设置参数的取值范围呢？
       A：写程序时，可以设定 theta = ln(theta2)，得到 theta2 的估计值后可以求出 theta = exp(theta2)。
             同理，可以设定 row = normal(row2)，得到 row2 的估计值后，可以求出 row = invnormal(row2)。