Table 4

Association between change in A1C and self-monitoring of blood glucose (SMBG)

CrudeModel 1Model 2Model 3
β (95% CI)P valueβ (95% CI)P valueβ (95% CI)P valueβ (95% CI)P value
SMBG frequency (times per day)−0.241
(−0.496 to 0.013)		0.06−0.131
(−0.261 to −0.0007)		0.049−0.158
(−0.276 to −0.041)		0.009−0.182
(−0.303 to −0.062)		0.004

  • Model 1 is adjusted for baseline A1C.

  • Model 2 is adjusted for baseline A1C, age, sex, and diabetes duration.

  • Model 3 is adjusted for baseline A1C, age, sex, diabetes duration and use of insulin therapy.