Research Article
Estimating Typhoid Fever Risk Associated with Lack of Access to Safe Water: A Systematic Literature Review
Table 2
Selection criteria for systematic literature review.
| Inclusion criteria |
| (i) Publications listed from January 1, 1990 to December 31, 2013 | (ii) Studies in English language | (iii) Research conducted in human subjects | (iv) Studies listed in PubMed database or Embase database or WHO website or PAHO website | (v) Study designs: case-control, cohort, randomized control trials | (vi) At least one water related exposure variable that could be categorized either as improved or unimproved drinking water source [4] | (vii) Water is consumed by drinking |
| Exclusion criteria | (i) Descriptive cross sectional studies that did not present odds ratio, case reports and case series | (ii) Studies that did not present water related risk-factors | (iii) Studies conducted in typhoid non-endemic area are excluded in the estimation of pooled odds ratio |
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