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Table 1 Variables used in the restricted randomization process

From: Study protocol for a cluster randomized trial of the Community of Voices choir intervention to promote the health and well-being of diverse older adults

Level

Variables

Individual level

% needing translation services

% living alone

% functionally impaired

% with “low” income

% with medical insurance

% on social security income

% with nutrition risk

% age < 60

% age 60-74

% age 75-84

% age 85+

% African American

% Asian/Pacific Islander

% Latino

% White

% male

Center level

Whether the following types of activities are offered:

• cognitive

• emotional

• singing

• arts/crafts

• health promotion

• meal service

• social services

• transportation services

• parties/cultural events

• day trips

Readiness for intervention

Moderately, quite, or extremely