The use of the Godin-Shephard Leisure-Time Physical Activity Questionnaire in oncology research: a systematic review

Table 1 Characteristics of the articles included in the systematic review (k = 212)

Characteristics	Median [IQR]	Range (min - max)
Year of publication (year)	2010 [2007–2013]	1997 - 2014
Sample size (N)^a	129 [56–359]	1 - 9105
Sample mean age (year)^a	58 [52–64]	11 - 77
Sample mean percentage of female (%)	61 [41–100]	0 - 100
	Number of articles (k)	Percentage (%)
Country where participants came from
Canada	110	51.9
USA	65	30.7
Australia	11	5.2
UK	9	4.2
Other countries^b,c	17	8.0
Cancer site
Breast	61	28.8
Prostate	19	9.0
Colorectal	16	7.5
Lung	12	5.7
Hematological (leukemia, myeloma)	10	4.7
Hodgkin/non-Hodgkin lymphoma	8	3.8
Endometrial	7	3.3
Brain/glioma	7	3.3
Head/neck/oral cavity	5	2.4
Ovarian	5	2.4
Kidney	5	2.4
Bladder	3	1.4
Survivors from different types of cancer	54	25.5

The unit of observation is the published article. IQR: 25th-75th interquartile range. k: number of published articles included in the systematic review. ^ak = 211 due to missing information in one article; for all the other variables, k = 212. ^bOne study included participants from Canada and USA (k = 1; 0.5 %) and one study included participants from Australia and New Zealand (k = 1; 0.5 %). ^cOther countries included New Zealand (k = 4; 1.9 %), Ireland (k = 3; 1.4 %), Norway (k = 3; 1.4 %), Taiwan (k = 3; 1.4 %), Spain (k = 2; 0.9 %) and Italy (k = 1; 0.5 %).

ISSN: 1471-2288