Table 1.

Time series analysis of patients with mood disorders (F30-39) (n = 4276)

Year	Season
	Winter (n)	Spring (n)	Summer (n)	Autumn (n)
1999	107	117	108	126
2000	94	130	143	122
2001	143	150	209	189
2002	163	143	245	212
2003	166	185	278	261
2004	183	238	348	252
Total	856	963	1331	1162
Average	142.66	160.50	221.83	193.66
Seasonal index	79.4	89.33	123.47	107.79
Chi-square	35.675	df = 15;
value		P<0.001