Table 1

Summary statistics for 1477 participants in wave 1 of ALSA

CharacteristicNumber*Overall (n = 1477)Survivors (n = 570)Decedents (n = 907)
* Denominator in % is count of non-missing observations for each variable. If more than 74 (5%) observations were missing for a variable, then a category of missing was added to ensure cases with missing observations were included in the analyses.
Social networks mean (95%CI)
Children14770.00 (−0.04 to 0.04)0.08 (0.01 to 0.14)−0.04 (−0.10 to 0.01)
Relatives14770.00 (−0.04 to 0.04)0.11 (0.04 to 0.17)−0.06 (−0.11 to −0.01)
Friends14770.01 (−0.03 to 0.05)0.19 (0.13 to 0.25)−0.11 (−0.16 to −0.06)
Confidants14770.01 (−0.03 to 0.05)0.10 (0.04 to 0.16)−0.04 (−0.09 to 0.00)
Total14770.02 (−0.06 to 0.11)0.48 (0.34 to 0.61)−0.26 (−0.37 to 0.15)
Social networks tertile cut off points
Children 0th, 33⅓rd, 66⅔rd, 100th1477−1.67, −0.02, 0.48, 1.17−1.67, −0.02, 0.49, 1.17−1.67, −0.11, 0.47, 1.17
Relatives 0th, 33⅓rd, 66⅔rd, 100th1477−1.05,−0.53, 0.37, 2.02−1.05,−0.33, 0.47, 2.02−1.05,−0.53, 0.23, 2.02
Friends 0th, 33⅓rd, 66⅔rd, 100th1477−1.54, −0.33, 0.46, 1.19−1.54, −0.06, 0.61, 1.19−1.54, −0.42, 0.32, 1.19
Confidants 0th, 33⅓rd, 66⅔rd, 100th1477−1.68, 0.07, 0.09, 0.77−1.68, 0.09, 0.77, 0.77−1.68, 0.07, 0.09, 0.77
Total 0th, 33⅓rd, 66⅔rd, 100th−5.69, −0.63, 0.84, 4.97−5.41, −0.08, 1.22, 4.63−5.69, −0.99, 0.51, 4.97
Age mean (95%CI)147779.8 (79.4 to 80.1)76.2 (75.8 to 76.7)82.0 (81.6 to 82.4)
Sex male n (%)1477928 (62.8)326 (57.2)602 (66.4)
Place of residence community n (%)14771340 (91.3)554 (97.2)786 (86.7)
Marital status married n (%)1477771 (52.2)330 (57.9)441 (48.6)
Age left school ⩽14 years n (%)1463830 (56.7)306 (53.8)524 (58.6)
Household income ⩽\$12000 n (%)*1369590 (39.9)212 (37.2)378 (41.7)
Number of morbid conditions median (95%CI)14771 (1 to 2)1 (1 to 1)1 (1–2)
Mobility disability1455506 (34.8)113 (19.9)393 (44.3)
Cognitive function poor n (%)1440219 (15.2)36 (6.4)183 (20.9)
Self rated health fair/poor n (%)1472469 (31.8)116 (20.4)353 (38.9)
Depressive symptoms n (%)*1400219 (14.8)59 (10.4)160 (18.6)
Hearing difficulty n (%)1472746 (50.7)253 (44.4)493 (54.7)
Vision difficulty n (%)1410375 (26.6)92 (16.7)283 (32.9)
Alcohol problem n (%)146665 (4.4)28 (4.9)37 (4.1)
Current smoker n (%)1461123 (8.4)31 (5.4)92 (10.3)
Former smoker n (%)1461677 (46.3)253 (44.5)424 (47.5)
Pack years of smoking for current/former smokers (median, 95%CI)80030.4 (27.7 to 32.4)26.5 (21.5 to 30.4)31.8 (29.2 to 35.4)
Sedentary n (%)*1457663 (45.5)214 (37.6)449 (50.6)