. Author manuscript; available in PMC: 2013 Dec 1.

Published in final edited form as: J Am Geriatr Soc. 2012 Nov 23;60(12):2197–2205. doi: 10.1111/jgs.12032

Table 2.

Incidence of Probable Dementia or Mild Cognitive Impairment (MCI) by Treatment Assignment

	Calcium/Vitamin D N=2034	Placebo N=2109	HR (95% CI)
Intent-to Treat Analysis
Probable Dementia or Mild Cognitive Impairment, No. (%)	98 (4.8%)	108 (5.1%)	0.94 (0.72, 1.24) P=0.68
Follow-up, mean, years (± SD)	7.7 (± 2.5)	7.8 (± 2.5)
Rate per 10,000 person-years	62.2	65.9
Analysis Excluding Follow-Up Time for Non-Adherent Participants^a
Probable Dementia or Mild Cognitive Impairment, No. (%)	62 (3.1%)	62 (2.9%)	1.05 (0.74, 1.49) P=0.79
Follow-up, mean, years (± SD)	6.4 (± 1.7)	6.44 (± 1.6)
Rate per 10,000 person-years	48.0	45.7

Participants excluded 6 months after nonadherence detected