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. 2017 May 11;10:71–80. doi: 10.2147/RMHP.S134940

Table 4.

Effect of the PEC program on eye strain symptoms

Time measurements Intervention group (n=35)
Control group (n=35)
χ2
Eye strain No eye strain Eye strain No eye strain
Baseline (week 1), n (%) 28 (80.0) 7 (20.0) 30 (85.7) 5 (14.3) 0.402*
Follow-up 1 (week 4), n (%) 9 (25.7) 26 (74.3) 27 (77.1) 8 (22.9) 18.529**
Follow-up 2 (week 8), n (%) 10 (28.6) 25 (71.4) 28 (80.0) 7 (20.0) 18.651**

Notes:

*

p-value=0.526.

**

p-value<0.001.

Abbreviation: PEC, participatory eye care.