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. Author manuscript; available in PMC: 2020 Jul 1.
Published in final edited form as: Ocul Surf. 2019 Apr 22;17(3):491–501. doi: 10.1016/j.jtos.2019.04.003

Table 2:

Frequency of meibomian gland features in the lower and upper lids

Meibomian Gland Features Lid p-value*
Upper (N=392) median (range) Lower (N=490) median (range)
Total number 20.00 (0.0 – 34.0) 15.50 (0.0 – 29.0) <0.001
Distorted 7.00 (0.0 – 20.5) 2.00 (0.0 – 15.0) <0.001
Tortuous 1.00 (0.0 – 7.5) 0.00 (0.0 – 3.0) <0.001
Hooked 0.00 (0.0 – 5.0) 0.00 (0.0 – 2.5) <0.001
Short 5.50 (0.0 – 16.0) 3.00 (0.0 – 18.5) <0.001
Thick 0.00 (0.0 – 5.5) 0.00 (0.0 – 3.0) <0.001
Thin 0.00 (0.0 – 9.0) 0.00 (0.0 – 5.0) <0.001
Overlap 1.00 (0.0 – 5.0) 0.00 (0.0 – 2.5) <0.001
Ghost 1.00 (0.0 – 21.0) 0.00 (0.0 – 12.0) <0.001
Drop-out 0.00 (0.0 – 7.0) 0.00 (0.0 – 6.0) <0.001
Other Features n (%) n (%) p-value
Tadpoling (yes) 28 (7.1%) 9 (1.8%) <0.001
Gaps (yes) 131 (33.4%) 2 (0.4%) <0.001
No lid margin extent (yes) 27 (6.9%) 39 (8.0%) 0.55
Fluffy areas (Yes) 180 (46.0%) 325 (66.3%) <0.001
*

P-value from the Kruskal Wallis test

P-value from the chi-square test