Demographic characteristics | July 2008 | January 2009 | January 2010 | July 2010 | ||||
---|---|---|---|---|---|---|---|---|
 | (n= 132) | (n= 122) | (n= 114) | (n= 145) | ||||
Age (in years) | Â | Â | Â | Â | ||||

Mean | 79.5 | 79.4 | 78.7 | 80.8 | ||||

Standard deviation | 13.6 | 13.7 | 14.6 | 13.5 | ||||

Range | 49 to 102 | 49 to 102 | 38 to 100 | 42 to 101 | ||||
Sex | No. | % | No. | % | No. | % | No. | % |

Male | 38 | 28.8 | 41 | 33.6 | 38 | 33.3 | 36 | 30.8 |

Female | 94 | 71.2 | 81 | 66.4 | 76 | 66.7 | 81 | 69.2 |
Marital status | No. | % | No. | % | No. | % | No. | % |

Never married | 17 | 12.9 | 14 | 11.5 | 16 | 14.0 | 13 | 11.1 |

Married | 36 | 27.3 | 32 | 26.2 | 31 | 27.2 | 28 | 23.9 |

Widowed | 61 | 46.2 | 55 | 45.1 | 52 | 45.6 | 61 | 52.1 |

Separated | 2 | 1.5 | 2 | 1.6 | 1 | 0.9 | 1 | 0.9 |

Divorced | 12 | 9.1 | 14 | 11.5 | 9 | 7.9 | 12 | 10.3 |

Unknown | 4 | 3.0 | 
 | 
 | 5 | 4.4 | 2 | 1.7 |