Journal of Obesity / 2014 / Article / Tab 2

Research Article

Socioeconomic and Demographic Factors for Spousal Resemblance in Obesity Status and Habitual Physical Activity in the United States

Table 2

Relative association and absolute similarity in weight status among the US married spouses, stratified by household/couple-level characteristics (MEPS 2006–2008).

$ of spousesAbsoluteRelative associations
(1) Similarity(2) Pearson’s correlation coefficients (3) Kappa coefficients between spouses weight status (4) ORs between wife’s and husband’s obesity status
Mean BMIBMI standard scoresNormal/overweight/obesityObesity
HusbandWife£Partial
95% CI95% CIOR95% CI

Whole sample11254 (100%)27.926.31.6 0.24(0.21, 0.27)0.107(0.107, 0.108)2.5(2.2, 2.9)
Stratified by
Couple’s race/ethnicity
 Both NH white(ref)5758 (69%)28.026.01.9 0.26(0.22, 0.30)0.102(0.101, 0.102)2.8(2.3, 3.4)
 Both NH black1127 (7%)29.029.2−0.2 0.21(0.14, 0.28)0.059(0.053, 0.066)1.7(1.2,2.3)*
 Both Hispanic2646 (12%)28.327.80.4 0.20(0.14, 0.26)0.099(0.096, 0.102)2.3(1.8, 2.8)
 Both were other755 (5%)25.423.51.9 0.29(0.18, 0.41)0.094(0.085, 0.104)3.4(1.3, 9.1)
 Interracial/ethnic 968 (7%)28.026.11.9 0.14(0.06, 0.23)*0.089(0.079, 0.098)1.8(1.2, 2.8)
Couple’s mean age
 <30 y1540 (13%)27.625.61.9 0.27(0.19, 0.35)0.090(0.085, 0.095)3.0(2.1, 4.4)
 30–39 y3227 (26%)28.126.31.8 0.28(0.23, 0.34)0.116(0.114, 0.119)2.9(2.3, 3.7)
 40–54 y4241 (39%)28.226.51.7 0.21(0.16, 0.27)0.116(0.115, 0.118)2.4(1.9, 3.1)
 ≥55 years2246 (22%)27.426.41.0 0.20(0.14, 0.27)0.081(0.078, 0.084)1.9(1.3, 2.8)
Physical activity
 Both active4629 (45%)27.425.42.0 0.24(0.20, 0.28)0.102(0.101, 0.103)2.9(2.4, 3.5)
 Only husband active2025 (18%)27.627.40.2 ***0.23(0.17, 0.29)0.113(0.108, 0.117)2.8(2.1, 3.8)
 Only wife active1438 (14%)28.525.82.7 ***0.18(0.10, 0.25)*0.052(0.048, 0.056)2.0(1.4, 2.8)
 Both inactive(ref)3092 (24%)28.727.51.2 0.28(0.22, 0.33)0.128(0.126, 0.130)2.3(1.8, 2.8)
Family size
 2 persons3345 (34%)27.525.81.7 0.20(0.14, 0.26)*0.089(0.087, 0.091)2.1(1.6, 2.8)
 3-4 persons5162 (47%)28.026.41.6 0.24(0.20, 0.28)0.109(0.107, 0.110)2.6(2.1, 3.1)
 ≥5 persons(ref)2747 (18%)28.527.01.4 0.30(0.23, 0.36)0.130(0.127, 0.132)3.1(2.3, 4.0)
Employment condition
 Both unemployed873 (7%)27.126.70.4 0.22(0.11, 0.32)0.075(0.068, 0.083)2.2(1.4, 3.6)
 Only husband unemployed625 (5%)28.026.91.1 0.09 (−0.01, 0.20)**0.053(0.042, 0.063)1.3(0.7, 2.3)**
 Only wife unemployed2835 (22%)27.726.31.4 0.23(0.18, 0.29)0.109(0.107, 0.112)2.4(1.8, 3.1)
 Both employed(ref)6899 (65%)28.126.21.9 0.26(0.22, 0.30)0.115(0.114, 0.116)2.8(2.3, 3.3)
Household income level
 Poor/near poor
 (<1.25 poverty line)
1611 (8%)28.027.60.3 0.25(0.18, 0.32)0.107(0.102, 0.112)2.3(1.8, 3.1)
 Low income
 (1.25–2.0 poverty line)
1564 (10%)27.927.40.5 0.26(0.18, 0.33)0.092(0.087, 0.097)2.5(1.8, 3.4)
 Middle income
 (2.0–4.0 poverty line)
3545 (32%)28.227.01.2 0.25(0.19, 0.30)0.117(0.115, 0.119)2.6(2.1, 3.2)
 High income
 (≥4.0 poverty line)
4534 (50%)27.725.52.3 0.23(0.19, 0.27)0.102(0.101, 0.104)2.6(2.1, 3.2)
Receiving food stamp last year
 Yes705 (3%)28.529.2−0.6 **0.27(0.17, 0.37)0.162(0.153, 0.171)3.0(2.0, 4.5)
 No(ref)10549 (97%)27.926.21.7 0.24(0.21, 0.27)0.105(0.104, 0.105)2.5(2.2, 2.9)

Couple-level analysis: obesity: BMI ≥ 30; overweight: 30 > BMI ≥ 25.
$The sum of numbers among categories may not add up to 11254 due to missing data.
Testing for cross strata difference, compared to the referent stratum: * < 0.05; ** < 0.01; *** < 0.001. (ref): the referent stratum.
£: difference in BMI = (husband’s BMI − wife’s BMI).
Adjusted for individual level variables, including husband’s and wife’s ages, education years, race/ethnicity, physical activity, smoking, individual income, employment status, survey year, indicator of respondent, and missingness indicators.