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. 1999 Aug 14;319(7207):412–415. doi: 10.1136/bmj.319.7207.412

Table 2.

Mean annual and seasonally adjusted mean annual incidence of weapon injury in Mongkol Borei hospital by period

Period Mid-period population Mean annual incidence (injuries/100 000) Seasonally adjusted mean annual incidence* (injuries/100 000)
Before peacekeeping operation (January 1991-February 1992) 457 177 158 147
During peacekeeping operation (March 1992-August 1993) 503 176 69 71
During study (March 1994-February 1995) 519 791 166 163
*

Monthly weights were product of mean monthly admissions and reciprocal of month specific mean admissions.