Table 3.

Univariate linear mixed regression model results for the association of humidity with visual acuity

Outcome	LASIK				LASEK
	Estimate (per 1% increase in humidity)	95% CI		P-value	Estimate (per 1% increase in humidity)	95% CI		P-value
		Lower	Upper			Lower	Upper
logMAR UDVA
POD1	−0.0001	−0.0012	0.0009	0.777	−0.0006	−0.0046	0.0035	0.782
POW1	−0.0005	−0.0014	0.0004	0.246	0.0005	−0.0024	0.0035	0.714
POM1	−0.0005	−0.0015	0.0006	0.371	0.0011	−0.0012	0.0035	0.342
POM3	−0.0002	−0.0015	0.0011	0.741	0.0001	−0.0033	0.0034	0.974
POM6	0.0007	−0.0022	0.0036	0.623	0.0010	−0.0018	0.0037	0.472
POY1	−0.0005	−0.0022	0.0012	0.535	−0.0021	−0.0049	0.0006	0.122
logMAR CDVA
POD1	−0.0014	−0.0027	0.0000	0.046	0.0028	−0.0013	0.0068	0.175
POW1	−0.0008	−0.0016	0.0001	0.086	0.0000	−0.0044	0.0044	0.992
POM1	−0.0011	−0.0021	−0.0001	0.034	−0.0023	−0.0041	−0.0005	0.015
POM3	−0.0015	−0.0026	−0.0003	0.019	0.0009	−0.0016	0.0034	0.472
POM6	−0.0015	−0.0038	0.0007	0.174	Not enough data for model to run
POY1	−0.0030	−0.0055	−0.0006	0.020	Not enough data for model to run

Note: The values shown in bold reflect those P-values that are significant (P<0.05).

Abbreviations: CDVA, corrected distance visual acuity; CI, confidence interval; LASEK, laser-assisted keratomileusis; LASIK, laser in situ keratomileusis; POD1, postoperative day 1; POW1, postoperative week 1; POM1, postoperative month 1; POM3, postoperative month 3; POM6, postoperative month 6; POY1, postoperative year 1; UDVA, uncorrected distance visual acuity.