Abstract
Objective: The purpose of this systematic review paper is to critically analyze research articles selected from literature. It discusses nature of problem, purpose/focus of study, theoretical and conceptual framework, sample size and sampling technique, instrument used in study, major findings, limitations and implications for further research.
Methodology: After careful analysis of 120 articles, 10 articles were selected for methodological systematic review. A quantitative review was conducted to examine the nature and methodologies of studies on religiosity, spirituality and health of patients.
Results: Significant majority of these studies have been conducted in developed countries. All the sampled studies have investigated spirituality along with religiosity except two that ignored the spiritual aspects. These findings explicate the need of conducting such researches in healthcare settings. During the systematic review of sampled articles, we found that only two studies used sample size more than one thousand. Seven had sample size less than 300.
Conclusions: Religion and spirituality are undeniable social facts that play a pivotal role in well-being of the patients with terminal diseases. Majority of studies have used previously constructed scales to gauge religiosity, spirituality and well-being. Studies should be conducted in healthcare settings to have more deep insight of said phenomenon.

Key words: Systematic review, methodology, religion, spirituality, health