Table 1.

Patient characteristics.

Age category		Health insurance claims data				Tōbyōki blog data
		Total, n (%)	Male, n (%)	Female, n (%)	Total, n (%)		Male, n (%)	Female, n (%)	Unknown, n (%)
All		4694 (100)	994 (100)	3700 (100)	671 (100)		36 (100)	634 (100)	1 (100)
	≤19 years old	275 (5.9)	86 (8.7)	189 (5.1)	125 (18.6)		5 (13.9)	120 (18.9)	0 (0.0)
	20-34 years old	449 (9.6)	123 (12.4)	326 (8.8)	233 (34.7)		15 (41.7)	218 (34.4)	0 (0.0)
	35-49 years old	2175 (46.3)	337 (33.9)	1838 (49.7)	71 (10.6)		6 (16.7)	65 (10.3)	0 (0.0)
	50-64 years old	1557 (33.2)	379 (38.1)	1178 (31.8)	5 (0.7)		0 (0.0)	5 (0.8)	0 (0.0)
	≥65 years old	238 (5.1)	69 (6.9)	169 (4.6)	0 (0.0)		0 (0.0)	0 (0.0)	0 (0.0)
	Unknown	0 (0.0)	0 (0.0)	0 (0.0)	237 (35.3)		10 (27.8)	226 (35.6)	1 (100)