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. 2020 Feb 7;20:23. doi: 10.1186/s12905-020-0894-z

Table 3.

Linear regression analysis with ocular health (signs and symptoms) as predictors based on lifestyle behaviours

Predictor Factor Significant regression equation R
Day 7 Day 14
General health score OCC (0–100) F (1,24) = 4.385, p = 0.047 0.393
Nutrition PRT (mm/s) F (1,25) = 6.008, p = 0.022 0.440
Caffeine intake TBUT (s) F (1,24) = 6.242, p = 0.020 0.454
PRT (mm/s) F (1,24) = 6.987, p = 0.014 0.475
Stress levels OSDI (0–100) F (1,25) = 4.461, p = 0.045 0.389
Exercise frequency PRT (mm/s) F (1,24) = 5.495, p = 0.028 0.432
Cosmetic use Papillae (0–4) F (1,25) = 5.991, p = 0.022 0.440
Environmental exposure time Bulbar hyperaemia (0–4) F (1,25) = 5.600, p = 0.026 0.428
MGD (0–4) F (1,25) = 11.179, p = 0.003 0.556
Corneal staining (0–4) F (1,25) = 4.797, p = 0.038 0.401

OSDI ocular surface disease index, OOC overall ocular comfort, TBUT tear break-up time, PRT phenol red thread, MGD meibomian gland dysfunction