The ADAS is a rater administered instrument that was designed to assess the severity of the dysfunction in the cognitive and noncognitive behaviors characteristic of persons with AD. The cognitive subscale of the ADAS that was used as the primary efficacy measure consists of 14 items assessing areas of cognitive function most typically impaired in AD: orientation, verbal memory, language, praxis, delayed free recall, digit cancellation, and maze completion measures. The ADAS-Cog14 scale ranges from 0 to 90. Higher scores indicate greater disease severity. Least Squares (LS) Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit.

All randomized participants who received at least 1 dose of study drug and had baseline and post baseline data.

The ADCS-ADL is a 23-item inventory developed as a rater-administered questionnaire answered by the participant's caregiver. The ADCS-ADL measures both basic and instrumental activities of daily living by participants. The total score ranges from 0 to 78, with lower scores indicating greater disease severity. LS Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit.

All randomized participants who received at least 1 dose of study drug and had baseline and post baseline data.

The cognitive subscale of ADAS (ADAS Cog11) consists of 11 items assessing areas of function most typically impaired in Alzheimer's disease (AD): orientation, verbal memory, language, and praxis. The scale ranges from 0 to 70, with higher scores indicating greater disease severity. LS Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit.

All randomized participants who received at least 1 dose of study drug and had baseline and post baseline data.

MMSE is a brief screening instrument used to assess cognitive function (orientation, memory, attention, ability to name objects, follow verbal/written commands, write a sentence, and copy figures) in elderly participants. Total score ranges from 0 to 30; lower score indicates greater disease severity. LS Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit.

All randomized participants who received at least 1 dose of study drug and had baseline and post baseline data.

The ADCS-ADL is a 23-item inventory developed as a rater-administered questionnaire answered by the participant's caregiver. The ADCS-ADL measures both basic and instrumental activities of daily living by participants. The total score ranges from 0 to 78, with lower scores indicating greater disease severity. LS Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit.

All randomized participants who received at least 1 dose of study drug and had baseline and post baseline data.

FAQ is a 10-item, caregiver-based questionnaire and was administered to the study partner who was asked to rate the participant's ability to perform a variety of activities ranging from financial management, shopping, playing games, food preparation, traveling, keeping appointments, keeping track of current events, and understanding media. FAQ total score was calculated by adding the scores from each of the 10 items. A negative change indicated an improvement from baseline. FAQ Total Score is the sum of 10 items, ranging from 0 (best possible outcome) to 100 (worst possible outcome). LS Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit.

All randomized participants who received at least 1 dose of study drug and had baseline and post baseline data.

CDR-SB is a semi-structured interview of participants and their caregivers. Participant's cognitive status is rated across 6 domains of functioning, including memory, orientation, judgment/problem solving, community affairs, home/hobbies, and personal care. Severity score assigned for each of 6 domains; total score (SB) ranges from 0 to 18. Higher scores indicate greater disease severity. LS Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit.

All randomized participants who received at least 1 dose of study drug and had baseline and post baseline data.

NPI assesses psychopathology in participants with dementia and other neurologic disorders. Information is obtained from a caregiver familiar with the participant's behavior. Total score ranges from 12 to 144; Higher scores indicate greater disease severity. LS Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit.

All randomized participants who received at least 1 dose of study drug and had baseline and post baseline data.

Assesses healthcare resource utilization (formal and informal care). Information gathered on both caregivers (care-giving time, work status) and participants (accommodation and healthcare resource utilization) was gathered from baseline and follow-up interviews. Reported number of hospitalizations per participant up to 76 weeks. LS Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit.

All randomized participants who received at least 1 dose of study drug and had baseline and post baseline data.

Assesses QoL for AD: participant rates mood, relationships, memory, finances, physical condition, and overall QoL assessment. Each of 13 items, rated on a 4-point scale. Sum of items=total score (range: 13 to 52). Higher scores indicate greater QoL. Participant's primary caregiver asked to complete same measure. LS Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit.

All randomized participants who received at least 1 dose of study drug and had baseline and post baseline data.

EQ-5D (proxy version) measures mobility, self-care, usual activities, pain/discomfort, anxiety/depression. 3 severity levels: no, some, severe problems. Visual analog scale (VAS) assesses caregiver's impression of participant's health state; score ranges: 0 to 100 millimeter (mm). Lower scores=greater disease severity LS Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit.

All randomized participants who received at least 1 dose of study drug and had baseline and post baseline data.

Integrated Alzheimer's Disease Rating Scale is used to assess that solanezumab slows down the cognitive and functional decline associated with AD compared with placebo. iADRS is a simple linear combination of ADAS-Cog 13 or 14 and the ADCS-iADL. The scale ranges from 0 to 146, where lower scores indicate worse performance. LS Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit.

All randomized participants who received at least 1 dose of study drug and had baseline and post baseline data.

Assess the proportion of participants who reach certain levels of cognitive and functional decline. Decline in cognition was defined as worsening from baseline by at least 6 or 9 points on the ADAS Cog14. If there is a cognitive decline of a specified cut-off or more at any time then the participant is considered a nonresponder. Functional nonresponders are participants who have not had any of the following at any time point: Clinically evident decline in ability to perform one or more basic ADL present at baseline; A clinically evident decline in ability to perform 20% or more of the instrumental ADL present at baseline; An increase in global CDR score of 1 point or more compared with baseline. A decline from no impairment to mild impairment (bADL, iADL is not considered clinically significant, but other declines of 1 or more points and any participant discontinuation within the first 6 months will be considered a non-responder.

All randomized participants.

Concentration of amino acid peptide known as Aβ 1-42 in plasma. The change in plasma Aβ analytes after treatment were assessed separately for each plasma Aβ parameter. LS Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit.

All randomized participants.

The vMRI assessment of right and left hippocampal atrophy, is reported. LS Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit.

All randomized participants.

Area Under the Concentration versus Time Curve was evaluated for Solanezumab.

All randomized participants who received at least 1 dose of study medication (Solanezumab) with evaluable Solanezumab PK data.

Florbetapir PET imaging was used to confirm the presence of amyloid pathology consistent with AD. Change from baseline was done to test the hypothesis that amyloid burden was reduced in participants in the treatment group. The change from baseline to the postbaseline visit of the composite summary standard uptake value ratio of florbetapir F18 was calculated. LS Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit. The composite summary measure is an unweighted average of the 6 smaller regions (anterior cingulate, frontal medial orbital, parietal, posterior cingulate, precuneus, and temporal) normalized to whole cerebellum or subject-specific white matter.

All randomized participants who received at least 1 dose of study drug and had baseline and post baseline data.

Concentration of CSF parameters includes amino acid peptide known as Aβ 1-42 and Aβ 1-42. Analyses of these CSF biomarkers was conducted in a subset of participants (as an addendum to the protocol). The dependent variable for each CSF parameter was its change from baseline to endpoint. LS Mean value was controlled for baseline value, baseline age, pooled investigator, treatment and visit.

All randomized participants who received at least 1 dose of study drug and had baseline and post baseline data.