Table 1

Characteristics of couples, 2002–2013 (N=5643 couples)

Variables	Frequency	Per cent
Insured spouse characteristics
Category of mental disorders
No mental disorders	3404	60.32
Affective disorders	151	2.68
Anxiety disorders	1197	21.21
Other	891	15.79
Gender
Female	1460	25.87
Male	4183	74.13
Age (years)
16–34	379	6.72
35–44	1295	22.95
45–54	1607	28.48
55–64	1185	21.00
≥65	1177	20.86
Occupation
First category (private employee and government employee)	2884	51.11
Second category (labour union member)	785	13.91
Third category (farmer and fisherman)	695	12.32
Fourth, fifth and sixth categories (soldier, social security insured, and veteran and religious group member)	1279	22.67
Premium-based monthly salary (US$)
≤576	1796	31.83
576–760	1833	32.48
760–960	413	7.32
960–1210	481	8.52
1210–1526	473	8.38
>1526	647	11.47
Comorbidity (CCI)
0	3853	68.47
≥1	1774	31.53
Catastrophic illness and injury
Absent	5106	90.48
Present	537	9.52
Dependent spouse characteristics
Category of mental disorders
No mental disorders	3230	57.24
Affective disorders	189	3.35
Anxiety disorders	1410	24.99
Other	814	14.42
Gender
Female	4183	74.13
Male	1460	25.87
Age (years)
16–34	654	11.59
35–44	1435	25.43
45–54	1391	24.65
55–64	1152	20.41
≥65	1011	17.92
Comorbidity (CCI)
0	4102	72.91
≥1	1524	27.09
Catastrophic illness and injury
Absent	5197	92.10
Present	446	7.90
Shared ecological characteristics
Region
Taipei	1980	35.17
Northern	869	15.44
Central	1076	19.12
Southern	752	13.36
Southeast	847	15.05
Eastern	105	1.87
Urbanisation level
Level 1 (highest)	1745	31.04
Level 2	1665	29.62
Level 3	954	16.97
Level 4	739	13.14
Level 5 (lowest)	519	9.23