Space-time clustering of childhood cancers: a systematic review and pooled analysis.

Pooled analysis of studies using Knox tests For childhood leukaemia at time of diagnosis, a pooled analysis of 16 individual samples from 15 original studies [ 21 , 24 , 25 , 27 , 38 , 42 , 44 , 46 , 47 , 49 , 50 , 53 , 54 , 56 , 84 ] showed marginally significant space–time clustering ( p = 0.054) with an overall excess of close pairs of S = 1.1% (Table 2 , Fig. 2 ).

also in 26,082 other papers