Relation between temperature and suicide mortality in Japan in the presence of other confounding factors using time-series analysis with a semiparametric approach

Table 1 Descriptive statistics of analysis variables (period of study from 1972 to 1995, Japan)

N	Region	Death count	MR^a	Mean	Tmax^b (°C)	Rhum^c (%)	Pst^d (hPa)	Sun^e (h)
1	Hokkaido	24489	0.5	2.79	12.6	70.2	1010.3	5.4
2	Tohoku	47548	0.57	5.42	15.7	72.9	1005.4	5.0
3	Kanto	134284	0.43	15.32	19.1	68.0	1007.3	5.6
4	Chubu	87744	0.49	10.01	18.9	70.9	1003.5	5.4
5	Kinki	89250	0.47	10.18	19.9	69.0	1008.7	5.6
6	Chugoku	34803	0.52	3.97	19.7	73.5	1012.9	5.4
7	Shikoku	19902	0.55	2.27	20.5	68.3	1013.3	5.9
8	Kyushu	59383	0.52	6.77	21.2	72.0	1013.2	5.6
9	Okinawa^f	4547	0.47	0.54	25.3	75.7	1009.3	5.5

The highest suicide mortality was observed in the Tohoku region (0.57) and the lowest in Kanto (0.43)
^aMortality rate
^bMaximum temperature
^cRelative humidity
^dStation level atmospheric pressure; hectopascal (hPa)
^eSunshine duration
^fThe period of the study was from 1973 to 1995

ISSN: 1347-4715