Table 5.
Linear regression analysis of cups per day of plain water on glycated Hb (HbA1c) in men (n 456) and women (n 579)* (B values and 95 % confidence intervals)
| Men | Women | |||||
|---|---|---|---|---|---|---|
| Models† | B ‡ | 95 % CI | P for trend | B ‡ | 95 % CI | P for trend |
| 1 | −0·05 | −0·08, −0·02 | <0·001 | −0·15 | −0·17, −0·13 | 0·111 |
| 2 | −0·03 | −0·06, −0·01 | <0·001 | −0·01 | −0·02, 0·01 | 0·293 |
| 3 | −0·04 | −0·06, −0·01 | <0·001 | −0·01 | −0·02, 0·01 | 0·346 |
| 4 | −0·04 | −0·07, −0·02 | <0·001 | −0·01 | −0·02, 0·01 | 0·326 |
| 5 | −0·04 | −0·07, −0·02 | <0·001 | −0·01 | −0·02, 0·01 | 0·313 |
*
P for interaction=0·010 for HbA1c and water intake between sexes.
†
Model 1=plain water; model 2=model 1+age, ethnic group, BMI, smoking status, qualifications (degree or not); model 3=model 2+total drinks minus plain water (g); model 4=model 3+energy intake, reporter category; model 5=model 4+fibre (g/4184 kJ (g/1000 kcal)).
‡
B value represents the change in HbA1c per increase of 1 cup/d of water.