After getting the Query command with prefix value n = 000, only tags, i.e., X, W, and Y, which possess the same prefix 000 will respond.
Based on the Query command and prefix value n sent from the reader, the tags act as follows.
Survey commands (svy prefix) of the statistical software Stata version 11.2 (Stata Corp ,College Station, Texas, US). were used to perform the weighted analyses.
The MI module with the survey prefix command of Stata was used for MI data analysis.
We performed survey data analysis by using Stata's svy prefix command.
Statistical analyses were performed using STATA V.12 and with survey-prefix command (svy) to take into account the complex two-stage sampling procedure.
Survey analyses using the 'svyset' command and the 'svy' prefix in STATA were used to account for a multi-stage cluster sampling design of the study including stratification, unequal selection probabilities, and clustering.
The associations between involvement in bullying-related behaviours and psychiatric morbidity, socioeconomic and other variables were investigated using multinomial logistic regression models in Stata ("mlogit" command using the "svy" prefix" to obtain robust standard errors).
The reader then broadcast a Query command along with a new prefix value n to all tags again (lines 10-13 oFigurere 2).
For each B j, a command Query along with a prefix value n is broadcasted by the reader to all tags as tag ID interrogation in which n = B j (lines 10-13 oFigurere 2).
Type the root password (in Ubuntu prefix the following commands with sudo, in MEPIS or Aptosid, first become root by typing su).
