During the Reformatory Era i.e. from 1990-91 to 2000-01, Technical Efficiency (CRS DEA) was 0.995 in 1990-91 which declined to 0.949 in 2000-01. Throughout the Reformatory era, the technical efficiency and other efficiency parameters demonstrate inconsistent behaviour as depicted through the growth rate. Estimates of Technical Efficiency (CRS) vary from low of 0.949 to high of 0.995 from 1990-91 to 2000-01. The Pure Technical Efficiency (VRS) varies from a low of 0.982 to a high of 0.998 in reformatory era. Similarly the scale efficiency shows the same pattern and has the lowest efficiency score of 0.966 and highest of 0.997. The results show that Public sector banks were comparatively more efficient at the time
of introduction of reforms but afterwards followed an inconsistent pattern and in fact reached to the lowest efficiency in 2000-01.
As seen in Table 3 during post reformatory era, the efficiency of Public sector banks was 0.957 in 2001-02 which increased to 0.959 in 2011-12. PSBs exhibited less variability in performance after 2001-02 as Technical efficiency (CRS) was nearly 1 in almost all the years. The growth rate also exhibited the positive trend for majority years. Same pattern was observed in the Pure Technical Efficiency (VRS) and Scale efficiency. Estimates of Technical Efficiency (VRS) vary from low of 0.978 to high of 0.999 and those of Scale Efficiency vary from low of 0.974 to high of 0.998 in the post reformatory era.