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Table 1 Search term

From: Spatial analysis of cluster randomised trials: a systematic review of analysis methods

Databases CRT terms Spatial terms Search string
Pubmed Randomi*ed Trial Spatial* (Randomi*ed trial) AND (group OR community OR cluster OR place) AND (spatial* OR indirect effect* OR spillover* OR contamination* OR externalit*)
Medline/Ovid Group Indirect effect*
WebOfScience Community Spillover*
  Cluster Contamination*
  Place Externalit*
  1. A star (*) represents a wildcard character