Table 2

Rate ratios (and 95% CIs) of suicide among the Japanese population according to quartile levels of each of the area-specific characteristics

	Quartile 1	Quartile 2		Quartile 3		Quartile 4
Social fragmentation
Unadjusted	Ref.	0.98	(0.95 to 1.01)	0.98	(0.95 to 1.00)	1.02	(0.99 to 1.05)
Adjusted†	Ref.	0.98	(0.95 to 1.00)	0.97	(0.95 to 1.00)	1.00	(0.97 to 1.04)
Socioeconomic deprivation
Unadjusted	Ref.	1.04*	(1.01 to 1.06)	1.07*	(1.05 to 1.10)	1.12*	(1.09 to 1.15)
Adjusted†	Ref.	1.05*	(1.03 to 1.07)	1.09*	(1.06 to 1.12)	1.13*	(1.10 to 1.17)
Urbanicity
Unadjusted	Ref.	0.93*	(0.90 to 0.96)	0.85*	(0.83 to 0.88)	0.80*	(0.78 to 0.83)
Adjusted†	Ref.	0.93*	(0.90 to 0.95)	0.84*	(0.82 to 0.87)	0.79*	(0.77 to 0.82)

Quartile 1 refers to the lowest levels of fragmentation, deprivation and urbanicity, and quartile 4 refers to the highest levels.
*P<0.05.
†Adjustments for the other two area-specific characteristics.
CIs, credible intervals; Ref., reference.