Table 3 Associations between log LF/HF and the background factors of CSC patients.

From: Central serous chorioretinopathy and heart rate variability analysis with a smartphone application

 

Mean

Relation to log LF/HF

ρ

P value

Age (years)

48.7 ± 7.6

 − 0.054

0.671

Sex (male:female)

57:7

 − 0.215

0.087

Disease duration (months)

20.0 ± 24.6

0.017

0.895

BMI

23.47 ± 2.72

0.067

0.599

Exercise habitsa

45%

0.293

0.019*

Smoking (current)

27%

0.156

0.218

Steroids (in use)

19%

0.067

0.598

Job (%)

   

 Clerical

58%

0.302

0.793

 Outdoors

28%

0.229

0.307

 Driver

11%

0.544

0.059

 Other

3%

0.359

0.970

Well-regulated life

36%

 − 0.043

0.735

Psychological fatigue

2.07 ± 0.60

0.163

0.199

Physical fatigue

2.16 ± 0.61

0.200

0.112

Sleeping time (/day)

6.17 ± 0.59

 − 0.008

0.948

CRT (μm)

357.4 ± 135.1

 − 0.200

0.113

CCT (μm)

423.8 ± 112.5

 − 0.180

0.155

ETDRS visual acuity (letters)

81.1 ± 10.4

 − 0.087

0.497

  1. aExercise habits in the patient group (do you exercise more than 30 min twice a week?
  2. (1: yes, 2: no), current smoking (1: yes, 2: no), inhalant and oral steroid use (1: yes, 2: no), Job (1: clerical, 2: outdoors (construction site, farming, etc.), 3: driver (taxi, bus, train driver), 4: other), well-regulated life (1: yes, 2: no), psychological fatigue (1: no, 2: minimal, 3: yes,) physical fatigue (1: no, 2: minimal, 3: yes), and mean sleeping times were collected by interview.
  3. BMI Body mass index, CSC central serous chorioretinopathy, CRT central retinal thickness, CCT central choroidal thickness, ETDRS Early Treatment of Diabetic Retinopathy Study, log LF/HF Low Frequency/High Frequency, ρ Spearman's rank correlation coefficient.
  4. *P value < 0.05.
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