Figure 3. Country differences in association of hypertension status between couples across countries.

A, Statistical interaction for each country (relative to the United States) in pooled analysis of wives (Table S5; Equation 3a). B, Statistical interaction for each country (relative to the United States) in pooled analysis of husbands (Table S5; Equation (3b). Estimates of association may be numerically, but not statistically, different between models used (eg, between survey‐weighted Poisson regression of analysis separately by country and in pooled country data set) due to differences in estimation method (maximum likelihood with survey design vs generalized estimating equations), confounding adjustment, etc.