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. Author manuscript; available in PMC: 2011 Jun 1.
Published in final edited form as: J Aging Health. 2011 Jan 27;23(4):714–742. doi: 10.1177/0898264310393339

Table 1.

Descriptive Statistics for Analytic Variables

RQ 1 (N = 5,937) RQ 2 (N = 5,026)
Mean (S.D.) Mean (S.D.) RANGE
Mortality T2–T3 0.15 (0.36) 0.16 (0.37) 0.00 – 1.00
Functional health
 Baseline functional limitations 0.27 (0.84) 0.27 (0.84) −3.43 – 7.25a
 Change in functional limitations T2-T1 0.54 (1.29) 0.57 (1.30) −5.00 – 7.37
Demographic controls
 Age at T1 49.48 (14.01) 50.08 (14.05) 30.00 – 95.00
 Female (coded 1) 0.62 (0.49) 0.62 (0.49) 0.00 – 1.00
 Non-White (coded 1) 0.21 (0.41) 0.21 (0.41) 0.00 – 1.00
 Parental status
  Minor child at T1 and T2 0.28 (0.45) 0.28 (0.45) 0.00 – 1.00
  No minor child at T1 and T2 0.55 (0.50) 0.56 (0.50) 0.00 – 1.00
  Minor child only at T1 0.15 (0.36) 0.14 (0.34) 0.00 – 1.00
  Minor child only at T2 0.02 (0.15) 0.02 (0.14) 0.00 – 1.00
 Work status
  Employed at T1 and T2 0.52 (0.50) 0.51 (0.50) 0.00 – 1.00
  No employment at T1 and T2 0.31 (0.46) 0.32 (0.47) 0.00 – 1.00
  Employed only at T1 0.12 (0.33) 0.12 (0.33) 0.00 – 1.00
  Employed only at T2 0.06 (0.23) 0.06 (0.23) 0.00 – 1.00
 Cohabitation at T1 (coded 1) 0.03 (0.17) 0.02 (0.13) 0.00 – 1.00
 Cohabitation at T2 (coded 1) 0.03 (0.16) 0.03 (0.16) 0.00 – 1.00
Socioeconomic status
 Education at T1 (in years) 12.67 (3.27) 12.62 (3.29) 0.00 – 20.00
 Logged income at T1 9.46 (0.76) 9.46 (0.75) 6.29 – 12.67
 Change in logged income T2-T1 0.18 (0.76) 0.18 (0.73) −4.56 – 5.39
Marital status continuity and change T1–T2
 Continuously married 0.53 (0.50) 0.00 – 1.00
 Continuously separated/divorced 0.14 (0.35) 0.00 – 1.00
 Continuously widowed 0.12 (0.32) 0.00 – 1.00
 Never married 0.06 (0.24) 0.00 – 1.00
 Married to separated/divorced 0.04 (0.19) 0.00 – 1.00
 Married to widowed 0.03 (0.18) 0.00 – 1.00
 Never/previously married to married 0.06 (0.24) 0.00 – 1.00
 Two+ times of marital status transition 0.02 (0.15)
Marital conflict/marital status T1–T2
 Continuously single of all types 0.38 (0.48) 0.00 – 1.00
 Consistently higher marital conflict 0.14 (0.35) 0.00 – 1.00
 Consistently lower marital conflict 0.40 (0.49) 0.00 – 1.00
 Increased marital conflict 0.05 (0.22) 0.00 – 1.00
 Decreased marital conflict 0.03 (0.16) 0.00 – 1.00

Notes: Data source is the National Survey of Families and Households (1987–2002). RQ 1 = Research Question 1, RQ2 = Research Question 2. T1 = Time 1, T2 = Time 2, T3 = Time 3. For parental status, minor child was defined as a child under age 19 in the household. For work status, employment was defined as part-time or full-time paid employment. Means for dichotomous variables are proportions. Descriptive statistics are averages from 10 imputed datasets.

a

Some imputed values were located outside the expected range of 0 to 5 (Allison, 2002).