. 2019 Jan 3;9(1):e024067. doi: 10.1136/bmjopen-2018-024067

Table 4.

Subgroup analysis for distal forearm fracture based on country, DM types, sex and study design

Factors	Subsets	RR and 95% CI	P value	I² (%)	P value for heterogeneity	Ratio of RR between subgroups	P value for ratios of RR
Country	Western	1.04 (0.87 to 1.23)	0.687	37.7	0.141	1.04 (0.48–2.26)	0.921
Country	Eastern	1.00 (0.47 to 2.13)	1.000	–	–	1.04 (0.48–2.26)	0.921
DM types	I	1.09 (0.43 to 2.75)	0.861	78.3	0.032	1.12 (0.43–2.94)	0.812
DM types	II	0.97 (0.66 to 1.09)	0.573	13.1	0.323	1.12 (0.43–2.94)	0.812
Sex	Men	1.04 (0.66 to 1.65)	0.863	58.5	0.090	1.12 (0.70–1.80)	0.644
Sex	Women	0.93 (0.82 to 1.05)	0.257	6.3	0.380	1.12 (0.70–1.80)	0.644
Study design	Prospective	1.00 (0.83 to 1.19)	0.982	41.0	0.094	0.93 (0.69–01.27)	0.662
Study design	Retrospective	1.07 (0.84 to 1.37)	0.565	0.0	0.944	0.93 (0.69–01.27)	0.662

DM, diabetes mellitus; RR, relative risk.