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Table 1 Table with overall data and stratified by DSBCS within or after three months

From: Ten-year trends of delayed sequential bilateral cataract surgery (DSBCS) in Sweden: a register-based study

Variables

Overall

 ≤ 3 months DSBCS

 > 3 months DSBCS

P value

(n = 368,106)

(n = 230,311)

(n = 137,795)

Sex, Female, n (%)

223,344 (60.7%)

141,340 (61.4%)

82,004 (59.5%)

 < 0.001

Age, years median [IQR]

75 [69, 80]

75 [70, 80]

74 [68, 80]

 < 0.001

Days between eyes, median [IQR]

61 [26, 161]

31 [14, 56]

273 [137, 910]

 < 0.001

CDVA first eye, median logMAR [IQR]

0.40 [0.30, 0.60]

0.40 [0.30, 0.52]

0.40 [0.30, 0.70]

 < 0.001

 Missing, n (%)

184 (0.1%)

102 (0.0%)

82 (0.1%)

 

CDVA second eye at first surgery, median logMAR [IQR]

0.22 [0.15, 0.40]

0.22 [0.15, 0.40]

0.19 [0.10, 0.30]

 < 0.001

Missing, n (%)

78 (0.0%)

44 (0.0%)

34 (0.0%)

 

Ocular comorbidity first eye, n (%)

138,144 (37.5%)

79,287 (34.4%)

58,857 (42.7%)

 < 0.001

 Glaucoma

30,500 (8.3%)

15,465 (6.7%)

15,035 (10.9%)

 < 0.001

 AMD

54,467 (14.8%)

34,049 (14.8%)

20,418 (14.8%)

0.78

 DR

15,856 (4.3%)

7646 (3.3%)

8210 (6.0%)

 < 0.001

 Uveitis

144 (0.0%)

66 (0.0%)

78 (0.1%)

 < 0.001

 PEX

30,845 (8.4%)

17,873 (7.8%)

12,972 (9.4%)

 < 0.001

 Cornea guttata

9898 (2.7%)

5951 (2.6%)

3947 (2.9%)

 < 0.001

 Other

24,016 (6.5%)

13,181 (5.7%)

10,835 (7.9%)

 < 0.001

Ocular comorbidity second eye, n (%)

126,785 (34.4%)

70,175 (30.5%)

56,610 (41.1%)

 < 0.001

 Glaucoma

27,573 (7.5%)

13,332 (5.8%)

14,241 (10.3%)

 < 0.001

 AMD

51,376 (14.0%)

31,329 (13.6%)

20,047 (14.5%)

 < 0.001

 DR

14,640 (4.0%)

6588 (2.9%)

8052 (5.8%)

 < 0.001

 Uveitis

233 (0.1%)

59 (0.0%)

174 (0.1%)

 < 0.001

 PEX

28,866 (7.8%)

14,588 (6.3%)

14,278 (10.4%)

 < 0.001

 Cornea guttata

9543 (2.6%)

5354 (2.3%)

4189 (3.0%)

 < 0.001

 Other

19,161 (5.2%)

10,578 (4.6%)

8583 (6.2%)

 < 0.001

Perioperative measures, first eye, n (%)

26,734 (7.3%)

12,880 (5.6%)

13,854 (10.1%)

 < 0.001

Perioperative measures, second eye, n (%)

20,549 (5.6%)

9238 (4.0%)

11,311 (8.2%)

 < 0.001

Multifocal lens, n (%)

2515 (0.7%)

2277 (1.0%)

238 (0.2%)

 < 0.001

Posterior capsule rupture first eye, n (%)

3145 (0.9%)

1122 (0.5%)

2023 (1.5%)

 < 0.001

Posterior capsule rupture second eye, n (%)

2726 (0.7%)

1378 (0.6%)

1348 (1.0%)

 < 0.001

  1. Differences between DSBCS within or after 3 months were tested with Mann–Whitney U test for continuous variables and the Chi-Squared test for categorical variables
  2. DSBCS = delayed sequential bilateral cataract surgery; n = number of participants; IQR = interquartile range; CDVA = corrected distance visual acuity; AMD = age-related macular degeneration; DR = diabetic retinopathy; PEX = pseudoexfoliation syndrome
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