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. Author manuscript; available in PMC: 2012 Mar 1.
Published in final edited form as: Stat Methods Appt. 2011 Mar 1;20(1):83–100. doi: 10.1007/s10260-010-0150-z

Table 1.

Number of follow-up visits in the OHTS data

Number of
follow-up visits		 Number of
non-POAG (%)		 Number of
POAG (%)		 Total
(%)
1 16 (1.1%) 2 (1.4%) 18 (1.1%)
2 17 (1.2%) 9 (6.1%) 26 (1.6%)
3 21 (1.4%) 13 (8.8%) 34 (2.1%)
4 16 (1.1%) 15 (10.1%) 31 (1.9%)
≥5 1,400 (95.2%) 109 (73.6%) 1,509 (93.3%)
Total 1,470 (100%) 148 (100%) 1,618 (100%)