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. 2023 Jul 1;23:101459. doi: 10.1016/j.ssmph.2023.101459

Table 2.

Characteristics of participants at pre-baseline by groups of social isolation (N = 10,577)a,b,c.

Participant Characteristics Social Isolation
Group 1 (n = 1593)
Group 2 (n = 7184)
Group 3 (n = 1800)
No. (%) Mean (SD) No. (%) Mean (SD) No. (%) Mean (SD)
Sociodemographic factors
 Age (yr; range: 48–96) 68.0 (8.9) 66.9 (9.5) 66.1 (9.9)
 Female (%) 996 (62.5) 4347 (60.5) 1022 (56.8)
Race/Ethnicity (%)
 White 1176 (73.8) 5457 (76.0) 1330 (74.0)
 Black 243 (15.3) 935 (13.0) 233 (13.0)
 Hispanic 140 (8.8) 618 (8.6) 182 (10.1)
 Other 34 (2.1) 173 (2.4) 53 (3.0)
 Married (%) 1430 (89.8) 4802 (66.9) 538 (29.9)
Annual Household Income (%)
 <$50,000 764 (48.0) 3875 (53.9) 1299 (72.2)
 $50,000–$74,999 276 (17.3) 1207 (16.8) 235 (13.1)
 $75,000–$99,999 184 (11.6) 741 (10.3) 109 (6.1)
 ≥$100,000 369 (23.2) 1361 (18.9) 157 (8.7)
Total Wealth (%)
 1st Quintile 148 (9.3) 1198 (16.7) 622 (34.6)
 2nd Quintile 274 (17.2) 1361 (18.9) 429 (23.8)
 3rd Quintile 330 (20.72) 1484 (20.7) 323 (17.9)
 4th Quintile 391 (24.5) 1544 (21.5) 246 (13.7)
 5th Quintile 450 (28.3) 1597 (22.2) 180 (10.0)
Education (%)
 <High School 191 (12.0) 1079 (15.1) 372 (20.7)
 High School 799 (50.3) 4008 (56.0) 1042 (58.0)
 ≥College 600 (37.7) 2076 (29.0) 382 (21.3)
 Employed (%) 642 (40.3) 3091 (43.0) 716 (39.8)
 Health Insurance (%) 1523 (95.7) 6743 (94.0) 1631 (90.7)
Geographic Region (%)
 Northeast 192 (12.1) 1043 (14.5) 293 (16.3)
 Midwest 449 (28.2) 1899 (26.5) 433 (24.1)
 South 683 (42.9) 2824 (39.4) 673 (37.4)
 West 267 (16.8) 1410 (19.7) 399 (22.2)
 Childhood Abuse (%) 96 (6.1) 512 (7.2) 197 (11.1)
Physical Health
 Diabetes (%) 283 (17.8) 1352 (18.8) 418 (23.2)
 Hypertension (%) 884 (55.5) 3975 (55.4) 1052 (58.5)
 Stroke (%) 72 (4.5) 415 (5.8) 142 (7.9)
 Cancer (%) 207 (13.0) 999 (13.9) 237 (13.2)
 Heart Disease (%) 309 (19.4) 1508 (21.0) 389 (21.7)
 Lung Disease (%) 88 (5.5) 532 (7.4) 223 (12.4)
 Arthritis (%) 929 (58.4) 4149 (57.8) 1056 (58.8)
 Overweight/Obesity (%) 1165 (73.8) 5181 (72.9) 1268 (71.6)
 Physical Function Limitations (%) 220 (13.8) 1335 (18.6) 535 (29.7)
 Cognitive impairment (%) 181 (11.5) 989 (13.9) 348 (19.6)
 Chronic Pain (%) 479 (30.1) 2445 (34.1) 772 (42.9)
 Self-Rated Health (range: 1–5) 3.5 (1.0) 3.3 (1.0) 2.9 (1.1)
Health Behaviors
 Heavy Drinking (%) 64 (4.8) 477 (8.3) 138 (9.4)
 Smoking (%) 70 (4.4) 811 (11.4) 439 (24.5)
 Frequent Physical Activity (%) 1299 (81.6) 5414 (75.5) 1118 (62.2)
 Sleep Problems (%) 320 (36.0) 1505 (38.9) 555 (49.3)
Religious Service Attendance (%)
 More than once a week 772 (48.5) 953 (13.3) 28 (1.6)
 Once a week 605 (38.0) 2100 (29.3) 101 (5.6)
 2–3 times a month 115 (7.2) 983 (13.7) 144 (8.0)
 One or more times a year 76 (4.8) 1668 (23.2) 408 (22.7)
 Not at all 25 (1.6) 1473 (20.5) 1117 (62.1)
Psychological Well-Being
 Positive Affect (range: 1–5) 3.9 (0.7) 3.6 (0.8) 3.2 (0.8)
 Life Satisfaction (range: 1–7) 5.5 (1.4) 5.0 (1.5) 4.2 (1.6)
 Optimism (range: 1–6) 4.8 (0.9) 4.6 (0.9) 4.0 (1.0)
 Purpose in Life (range: 1–6) 5.05 (0.8) 4.8 (0.9) 4.3 (1.0)
 Mastery (range: 1–6) 5.0 (1.0) 4.8 (1.1) 4.6 (1.2)
 Health Mastery (range: 1–10) 7.8 (2.0) 7.4 (2.2) 7.0 (2.6)
 Financial Mastery (range: 1–10) 7.6 (2.2) 7.3 (2.5) 6.7 (3.0)
Psychological Distress
 Depression (%) 113 (7.1) 851 (11.9) 409 (22.7)
 Depressive Symptoms (range: 0–8) 0.8 (1.5) 1.2 (1.8) 2.0 (2.3)
 Hopelessness (range: 1–6) 1.9 (1.0) 2.2 (1.2) 2.9 (1.4)
 Negative Affect (range: 1–5) 1.6 (0.5) 1.7 (0.6) 1.9 (0.7)
 Perceived Constraints (range: 1–6) 1.9 (1.0) 2.1 (1.1) 2.5 (1.3)
Social Factors
 Loneliness (range: 1–3) 1.3 (0.3) 1.5 (0.4) 1.8 (0.5)
Personality
 Openness (range: 1–4) 3.1 (0.5) 2.9 (0.5) 2.8 (0.6)
 Conscientiousness (range: 1–4) 3.5 (0.4) 3.4 (0.5) 3.3 (0.5)
 Extraversion (range: 1–4) 3.4 (0.5) 3.2 (0.5) 2.9 (0.6
 Agreeableness (range: 1–4) 3.7 (0.4) 3.5 (0.5) 3.4 (0.5)
 Neuroticism (range: 1–4)
a

This table was created based on non-imputed data.

b

All variables in Table 1 were used as covariates, and assessed in the pre-baseline wave (t0;2008/2010).

c

The percentages in some sections may not add up to 100% due to rounding.