Correlation between positive degree and psychological distress in patients with interstitial lung disease

Table 1 Patients’ general information

Variable	n	Composition ratio (%)
Gender
Male	177	52.20
Female	193	47.80
Marital status
Have a spouse	226	61.10
No spouse	144	38.90
Educational level
Junior high school and below	127	34.30
Secondary/high school	145	39.20
College degree or above	98	26.50
Monthly household per capita income
< 3000	153	41.40
3000-5000	123	33.20
> 5000	94	25.40
Smoking
Yes	66	17.80
No	304	82.20
Diseases
IPF	93	25.10
Non-IPF	277	74.90
Taking hormones
Yes	214	58.10
No	156	41.90
Immunosuppressants
Yes	216	57.80
No	154	42.20
Difficulty breathing
Level 0	99	26.80
Level 1	125	33.80
Level 2	77	20.80
Level 3	54	14.60
Level 4	15	4.10
PSSS score (points)
> 60	175	47.30
≤ 60	195	52.70

IPF: Idiopathic pulmonary fibrosis; PSSS: Perceived Social Support Scale.