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. Author manuscript; available in PMC: 2016 Aug 1.
Published in final edited form as: JAMA Ophthalmol. 2015 Aug;133(8):888–896. doi: 10.1001/jamaophthalmol.2015.1312

Table 1.

Number of Follow-up Retina Visits and Interventions Prior to 1-Year – “More Frequent” Cohort only

Control N = 424** Intervention N = 423**

Number of Follow Up Retina Visits* Prior to 1-Year Visit

1 145 (34%) 169 (40%)
2 54 (13%) 68 (16%)
3 49 (12%) 51 (12%)
4 28 (7%) 33 (8%)
5 or more 148 (35%) 102 (24%)

Median (25th, 75th percentile) 3 (1, 6) 2 (1, 4)
Mean ± SD 4 ± 4 3 ± 3

Number of Interventions*** Received After Baseline and Prior to 12 Month Visit

0 NA 91 (22%)
1 NA 176 (42%)
2 NA 110 (26%)
3 NA 46 (11%)
*

Case report form captures this information for clinical center visits at the DRCR.net site that enrolled the participant.

**

Includes only participants who completed the 1-Year primary outcome visit and had a non-missing central lab value (i.e., participants in the primary analysis).

***

A visit was counted as an intervention if point of care HbA1c was captured at the visit.