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. 1998 Oct 31;317(7167):1191–1194. doi: 10.1136/bmj.317.7167.1191

Table 2.

Interventions studied in 364 randomised controlled trials reporting on quality of life

Intervention No (%) of trials
Drug 238 (65)
Model of care  39 (11)
Surgery 30 (8)
Psychological 11 (3)
Radiotherapy  7 (2)
Nutrition  6 (2)
Exercise  4 (1)
Other 29 (8)