It is a non-randomised controlled study (NRCT
) spread over 10 years, as IC/ PBS is a chronic condition and treatment will not result in total cure, but only alleviate the disease condition.
(i) Type of study design: randomized controlled trials (RCTs), nonrandomized controlled trials (NRCTs
), interrupted time series (ITS), before-after studies (controlled or not), cohort studies, case-control studies, cases series or case reports, systematic or scoping review, and meta-analysis.
These meta-analyses included the available nonrandomized comparative studies (NRCTs
) to overcome the paucity of RCTs.
Most studies have a high risk of bias because they are not randomized (3,4,16-18,25,26,30-32,35,37-40,42) and do not show information about blinding of the intervention group (realm five RCT, NRCT
and CBA), classifying as uncertain risk of bias in this area.
These 13 studies comprise 2 nonrandomized control trials (NRCTs
), (32,33) 4 PCS, (26,29,31,35) and 7 RCS.
Our search identified only four that specifically assessed indices of psychological status, including one NRCT
 and three RCTs [53, 55, 64, 65]; significant improvements were noted with yogic practices in all but one study (Table 2).
During the period between 2000 and 2005, the National Research Council of Thailand (NRCT
), Thailand's major fund granter, concentrated on creating research roadmaps.
This work was supported by The National Research Council of Thailand (NRCT
) and Chiang Mai University under the National Research Universities Initiative.
But there were some quasirandomised controlled trials (qRCT) and nonrandomized controlled trials (NRCT
) in the inclusion literatures, which reduced the confidence level of meta-analysis.
This study was financially supported by a Royal Golden Jubilee Scholarship Grant (PhD/0208/2548) and by the National Research Council of Thailand (NRCT
) through Suranaree University of Technology (SUT-104-53-36-09).
Carlsson (Florida Atlantic University, USA), the National Research University Project of Thailand, the Thailand Commission on Higher Education of Thailand, the Thailand Research Fund (TRF), the National Research Council of Thailand (NRCT
), and the National Metal and Materials Technology Center (MTEC), Thailand.
The randomized controlled trials (RCT) and nonrandomized controlled trials which (NRCT
) have been published within the last 20 years.