Table 1 Patient demographics and baseline characteristics.

From: Efficacy and safety of subthreshold micropulse laser compared with threshold conventional laser in central serous chorioretinopathy

 

SML (n = 44)

TCL (n = 44)

t or χ2 or z

P1

P2

Sex

  Male, n (%)

35 (79.55)

42 (95.45)

   

  Female, n (%)

9 (20.45)

2 (4.55)

5.091

0.024*

 

Age (years)

 Mean ± SD

44.41 ± 8.71

44.68 ± 6.77

0.164

0.87

 

 Median (IQR)

44 (39–51.5)

45 (40–48)

0.322

 

0.748

Duration (weeks)

  Mean ± SD

10.50 ± 8.22

10.20 ± 8.22

−0.169

0.867

 

  Median (IQR)

7.5 (4–18)

6.5 (4–18)

−0.324

 

0.746

BCVA (ETDRS letters)

  Mean ± SD

76.60 ± 7.00

77.84 ± 7.70

0.159

0.874

 

  Median (IQR)

77 (73–80)

77.5 (72–82)

0.209

 

0.835

CRT (μm)

  Mean ± SD

398.50 ± 92.92

407.49 ± 133.55

0.367

0.715

 

  Median (IQR)

381 (332–445.75)

374 (324.5–458)

−0.142

 

0.887

Leakage location

  Ring 2, n (%)

35 (79.55)

34 (77.27)

   

  Ring 3, n (%)

9 (20.45)

10 (22.73)

0.067

0.796

 

Leakage point

  Single, n (%)

35 (79.55)

35 (79.55)

   

  Multiple, n (%)

9 (20.45)

9 (20.45)

0

1

 

Primary/recurrent

  Primary, n (%)

41 (93.18)

37 (84.09)

1.805

0.179

 

  Recurrent, n (%)

3 (6.82)

7 (15.91)

   

Prior laser treatment n (%)

1 (2.27)

4 (9.09)

0.848

0.357

 

Systemic steroid n (%)

0 (0)

2 (4.55)

0.512

0.474

 
  1. Full analysis set. P1 represented the P value of the independent t-test result or χ2. P2 represented the P value of the Wilcoxon rank-sum (Mann–Whitney) test
  2. SML subthreshold micropulse laser, TCL threshold conventional laser, SD standard deviation, IQR interquartile range, BCVA best-corrected visual acuity, ETDRS Early Treatment Diabetic Retinopathy Study, CRT central retinal thickness
  3. *Significant P value (<0.05)