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Table 1 Mental health care utilization 1 year before and after cataract surgery for the first eye

From: Effect of the time interval between cataract surgery for both eyes on mental health outcome: a cohort study of 585,422 patients

   All patients Pre-cataract surgery Post-cataract surgery  
Had mental service consultation Did not have mental healthconsultation Had mental service consultation Did not have mental health consultation
  Number of patients 585,422 144,841 440,581   147,414 438,008  
Age Mean (SD) 69.31 (9.50) 70.11 (8.79) 69.05 (9.71) < 0.001 70.03 (8.79) 69.07 (9.72) < 0.001
Median (IQR) 70 (63–76) 71 (64–76) 70 (63–76)   71 (64–76) 70 (63–76)  
20–35 1062 88 974 < 0.001 114 948 < 0.001
35–50 15,372 2301 13,071   2397 12,975  
50–65 153,580 34,255 119,325   35,056 118,524  
> = 65 415,408 108,197 307,211   109,847 305,561  
Mental service consultation       
Pre-surgery 144,841   103,364 41,477  
Post-surgery 147,414 103,364 44,050   
Number of consultations       
Number of mental consultation Pre-surgery 1.77 (4.60) 7.15 (6.86)   6.18 (7.26) 0.28 (1.33) < 0.001
Median (IQR) 0 (0–0) 5 (2–11)   4 (0–10) 0 (0–0)  
Number of mental consultation Post-surgery 1.79 (4.60) 6.20 (7.21) 0.35 (1.59) < 0.001 7.13 (6.78)  
Median (IQR) 0 (0–1) 4 (0–10) 0 (0–0)   5 (2–11)  
Sex Male 249,637 49,037 200,600 < 0.001 50,004 199,633 < 0.001
Female 335,785 95,804 239,981   97,410 238,375  
Urbanization Urban 322,728 81,661 241,067 < 0.001 82,868 239,860 < 0.001
Suburban 186,643 45,441 141,202   46,313 140,330  
Rural 76,051 17,739 58,312   18,233 57,818  
Low income status (yes)   4842 1372 3470   1427 3415  
Charlson comorbidity index 0 557,853 136,568 421,285 < 0.001 139,901 417,952 < 0.001
1 19,094 5699 13,395   5158 13,936  
> = 2 8475 2574 5901   2355 6120  
Time interval (days) mean (SD) 340.09 (545.05) 330.32 (527.81) 343.30 (550.56) < 0.001 337.23 (531.99) 341.05 (549.37) 0.0199
median (IQR) 77 (28–393) 82 (28–385) 77 (28–399)   84 (29–399) 77 (28–392)  
Time interval (by subgrouping, months) < 3 259,919 63,471 196,448 < 0.001 63,426 196,493 < 0.001
3–6 108,977 27,621 81,356   28,004 80,973  
6–12 62,267 16,206 46,061   16,890 45,377  
> 12 154,259 37,543 116,716   39,094 115,165  
  1. Chi-squared tests and t-tests were used for categorical and continuous variables, respectively
  2. SD standard deviation, IQR interquartile range