(b).

SNP	Risk allele	Frequency of risk allele			Risk allele odds ratio (95% C.I.)		P value; statistical power (%)
Pro12Ala	Ala	Control group	Diabetic group	Obese group	Control/Diabetic	Control/Obese	Control/Diabetic	Control/Obese
		0.06	0.08	0.08	1.2 (0.73–2.03)	1.1 (0.70–1.96)	0.4; 23%	0.5; 12.2%
C1431T	T
		0.13	0.10	0.07	0.74 (0.49–1.1)	1.83 (1.17–2.86)	0.1; 17.6%	0.008; 68.3%
A-2819G	G
		0.10	0.18	0.10	2.25 (1.46–3.44)	1.03 (0.67–1.57)	1.9 × 10−4; 98%	0.9; 9%