Table 2.

Bivariate Correlations between Troublesome Scores and pH Findings

Variable	Heartburn Troublesome* Score		Regurgitation Troublesome* Score
	Correlation (r)**	P	Correlation (r)	P
Total: % Time pH < 4.0
Day 1	0.19	0.14	0.24	0.07
Day 2	−0.11	0.39	0.21	0.11
Supine: % time pH < 4.0
Day 1	0.14	0.28	0.09	0.50
Day 2	0.14	0.28	0.15	0.25
Upright: % time pH < 4.0
Day 1	0.16	0.22	0.29	0.03
Day 2	0.12	0.36	0.18	0.16
Total Reflux Episodes
Day 1	0.26	0.05	0.29	0.03
Day 2	0.03	0.85	0.14	0.28

^*Troublesome scores range from 0–100.

^**Bivariate correlations adjusted for age and gender.