Table 1 Baseline characteristics of patients undergoing ptosis repair with intraocular surgery (PRIOS) vs. ptosis repair alone (PRO), before and after propensity score matching.

From: Risk of reoperation for recurrent ptosis following intraocular surgery

 

Patients, no (%)

 

Before propensity score matching

After propensity score matchinga

Characteristic

ICD-10/CPT/TriNetX code

PRIOS (N = 1602)

PRO (N = 12,093)

SMD

PRIOS (N = 1598)

PRO (N = 1598)

SMD

Age at Index, mean (SD), years

NA

71.8 ± 6.9

69.4 ± 8.4

0.320

71.8 ± 6.9

72.1 ± 7.3

0.042

Sex

NA

      

 Female

NA

1049 (65.5)

7675 (63.5)

0.042

1045 (65.4)

1031 (64.5)

0.018

 Male

NA

537 (33.5)

3977 (32.9)

0.013

537 (33.6)

553 (34.6)

0.021

Race

 White

2106-3

1265 (79.0)

9388 (77.6)

0.032

1262 (79.0)

1310 (82.0)

0.076

 Black or African American

2054-5

90 (5.6)

734 (6.1)

0.019

90 (5.6)

85 (5.3)

0.014

 Asian

2028-9

64 (4.0)

469 (3.9)

0.006

63 (3.9)

59 (3.7)

0.013

Ethnicity

 Hispanic or Latino

2135-2

144 (9.0)

818 (6.8)

0.083

144 (9.0)

120 (7.5)

0.055

Essential (primary) hypertension

I10

946 (59.1)

5,926 (49.0)

0.203

942 (58.9)

953 (59.6)

0.014

Hyperlipidaemia, unspecified

E78.5

721 (45.0)

4534 (37.5)

0.153

719 (45.0)

741 (46.4)

0.028

Type 2 diabetes mellitus

E11

497 (31.0)

2706 (22.4)

0.196

493 (30.9)

486 (30.4)

0.010

Overweight and obesity

E66

329 (20.5)

2033 (16.8)

0.096

327 (20.5)

317 (19.8)

0.016

Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders

F40-F48

327 (20.4)

2081 (17.2)

0.082

326 (20.4)

319 (20.0)

0.011

Systemic connective tissue disorders

M30-M36

85 (5.3)

405 (3.3)

0.096

84 (5.3)

85 (5.3)

0.003

Dry eye syndrome

H04.12

565 (35.3)

2615 (21.6)

0.306

561 (35.1)

553 (34.6)

0.011

Blepharitis

H01.0

156 (9.7)

864 (7.1)

0.093

154 (9.6)

157 (9.8)

0.006

Contact Lens Services

1012841

33 (2.1)

190 (1.6)

0.037

33 (2.1)

21 (1.3)

0.058

Nicotine dependence

F17

103 (6.4)

644 (5.3)

0.047

101 (6.3)

85 (5.3)

0.043

Problems related to housing and economic circumstances

Z59

10 (0.6)

32 (0.3)

0.054

10 (0.6)

10 (0.6)

0.000

Problems related to social environment

Z60

12 (0.7)

21 (0.2)

0.085

10 (0.6)

10 (0.6)

0.000

  1. CPT current procedural terminology, ICD-10 international classification of diseases, tenth revision, SMD standardized mean difference.
  2. aPropensity score matching (PSM) was conducted on the following baseline characteristics: age at index, sex, race, ethnicity, essential (primary) hypertension, type 2 diabetes mellitus, hyperlipidaemia, overweight and obesity, systemic connective tissue disorders, blepharitis, dry eye syndrome, anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders, nicotine dependence, problems related to housing and economic circumstances, problems related to social environment, and contact lens services.