• Categorisation of Foot Complaints in Systemic Lupus Erythematosus (SLE) From a New Zealand Cohort

      Otter, S; Rohan, M; Davies, K; Kumar, S; Gow, P; Dalbeth, N; Corkhill, M; Panthakalem, S; Rome, K (BioMed Central, 2017)
      Background: Foot complaints have been shown to be common in systemic lupus erythematosus (SLE) and heterogeneous in nature. We aimed to categorize self-reported foot complaints in people with SLE and foot symptoms. Methods: ...
    • Clinically-evident Tophi Are Associated With Reduced Muscle Force in the Foot and Ankle in People With Gout: A Cross-sectional Study

      Stewart, S; Dalbeth, N; Otter, S; Gow, P; Kumar, S; Rome, K (BioMed Central, 2017)
      Background: The foot and ankle represent a common site for tophi in people with gout, yet it is unclear whether the presence of tophi is related to impaired muscle function. This study aimed to determine the association ...
    • Co-integration and the demand for energy in Fiji

      Kumar, S (Inderscience Enterprises Ltd., 2011)
      This paper applies alternative time series techniques such as general to specific (GETS) and Johansen maximum likelihood (JML) to estimate the long-run income and price elasticities of demand for energy for Fiji. We also ...
    • Does Economic Integration Stimulate Capital Mobility? An Analysis of Four Regional Economic Communities in Africa

      Kumar, S; Sen, R; Srivastava, S (Elsevier, 2013)
      It is well known that high levels of regional integration enable portfolio risk diversification and capital mobility. While there have been a number of empirical attempts to verify the presence of capital mobility using ...
    • Epidemiology of foot complaints in systemic lupus erythematosus

      Otter, S; Kumar, S; Dalbeth, N; Davies, KA; Panthakalam, S; Rome, K (BioMed Central Ltd, 2015)
      Foot complaints are common in inflammatory arthropathies such as rheumatoid arthritis and cause considerable disability. However, little is known about the nature and extent of foot complaints in systemic lupus ...
    • Firms' Asset Holdings and Inflation Expectations

      Kumar, S (Elsevier, 2018)
      This paper investigates the relationship between firms’ inflation expectations and their holdings of liquid assets. We implement a new quantitative survey of firms’ expectations about inflation in New Zealand. We find that ...
    • Firm’s Asset Holdings and Inflation Expectations

      Kumar, S (Elsevier, 2020)
      This paper investigates the relationship between firms’ inflation expectations and their holdings of liquid assets. We implement a new quantitative survey of firms’ expectations about inflation in New Zealand. We find that ...
    • Great Recession and Information Stickiness: Evidence from Sticky Information Phillips Curve

      Kumar, S (Taylor & Francis (Routledge), 2020)
      We utilize the nonlinear least squares (NLLS) and seemingly unrelated regression (SUR) techniques to estimate information stickiness parameter λ for the USA. We find that λ values appeared in a somewhat humped shape or ...
    • Inflation Expectations As a Policy Tool?

      Coibion, O; Gorodnichenko, Y; Kumar, S; Pedemonte, M (Elsevier, 2020)
      We assess the prospects for central banks using inflation expectations as a policy tool for stabilization purposes. We review recent work on how expectations of agents are formed and how they affect their economic decisions. ...
    • Is the US demand for money unstable?

      Rao, BB; Kumar, S (Taylor & Francis (Routledge), 2011)
      The demand for money (M1) for the USA is estimated with annual data from 1960-2008 and its stability is analyzed with the extended Gregory and Hansen (1996b) test. In addition to estimating the canonical specification, ...
    • Patterns of foot complaints in systemic lupus erythematosus: a cross sectional survey

      Otter, S; Kumar, S; Gow, P; Dalbeth, N; Corkhill, M; Rohan, M; Davies, KA; Pankathlem, S; Rome, K (BioMed Central, 2016)
      Background: Foot complaints are common in inflammatory arthropathies such as rheumatoid arthritis and cause considerable disability. However, little is published about the nature and extent of foot complaints in systemic ...
    • Testing for Structural Changes in the Wagner’s Law for a Sample of East Asian Countries

      Kumar, S; Cao, Z (Springer (part of Springer Nature), 2019)
      This paper examines the Wagner’s Law for a sample of East Asian countries (China, Hong Kong, Japan and South Korea) by utilizing the structural break methods viz., Gregory and Hansen (J Econom 70:99–126, 1996a; Oxf Bull ...