Table 4 Association of biochemical parameters and the children who consumed RO water, non RO water and high fluoride water.

From: Comparison of serum calcium, magnesium, phosphate, alkaline phosphatase, and vitamin D levels in children consuming reverse osmosis, non reverse osmosis, and high fluoride drinking water

Parameter

 

R2

Constant

β

Confidence interval

p-value

Serum calcium

 Calcium in water

*

0.177

9.386

0.008

0.006–0.011

0.001

#

0.286

9.403

0.006

0.002–0.009

0.001

 TDS

*

0.178

9.428

0.001

0.001–0.001

0.001

#

0.298

9.425

0.001

0.000–0.001

0.001

Serum magnesium

 Magnesium in water

*

0.054

2.201

0.002

0.001–0.003

0.001

#

0.127

2.461

0.002

0.001–0.004

0.001

 TDS

*

0.002

2.241

4.945E−5

0.000–0.000

0.529

#

0.142

2.439

− 7.959E−5

0.000–0.001

0.455

Serum alkaline phosphatase

 TDS

*

0.104

257.38

− 0.063

− 0.091–0.035

0.001

#

0.119

225.18

− 0.073

− 0.105–0.042

0.001

 Serum phosphate

 Phosphate in water

*

0.023

4.152

− 1.239

− 2.352-

− 0.127

0.029

#

0.180

1.847

− 1.260

− 2.277-

− 0.242

0.016

 TDS

*

0.037

3.868

0.001

0.000–0.001

0.006

#

0.143

2.258

0.000

0.000–0.001

0.682

  1. *Simple linear regression analysis without adjusting any variables.
  2. #Multivariate linear regression analysis after adjusting age, gender, socioeconomic status, BMI, calcium, magnesium, phosphate assessed through food frequency questionnaire.
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