2012 National Statistics 1. Tuberculosis | Principal Diagnosis Only Graph Table Show 2-Way Tables 1. Tuberculosis Standard Errors Total Number of Discharges 5,160 228 Weighted national estimates from HCUP National Inpatient Sample (NIS), 2012, Agency for Healthcare Research and Quality (AHRQ), based on data collected by individual States and provided to AHRQ by the States. Total number of weighted discharges in the U.S. based on HCUP NIS = 36,484,846. Statistics based on estimates with a relative standard error (standard error / weighted estimate) greater than 0.30 or with standard error = 0 in the nationwide statistics (NIS, NEDS, and KID) are not reliable. These statistics are suppressed and are designated with an asterisk (*). The estimates of standard errors in HCUPnet were calculated using SUDAAN software. These estimates may differ slightly if other software packages are used to calculate variances. Beginning with the 2012 data, the National Inpatient Sample (NIS) was redesigned to optimize national estimates. The nationwide statistics in HCUPnet for years prior to 2012 were regenerated using new trend weights in order to permit longitudinal analysis. The regenerated data were posted to HCUPnet on 7/2/2014. The statistics for years prior to 2012 currently on HCUPnet will differ slightly from statistics obtained prior to 7/2/2014. For more information about the NIS redesign and trend weights, please view the Overview of the NIS. See the ICD codes that comprise CCS categories. If you want to test whether apparent differences are significant, use the Z-Test Calculator. A p-value of less than 0.05 is generally considered statistically significant.