Utilizing harmonization and common surveillance methods to consolidate 4 cohorts: the Western Alaska Tribal Collaborative for Health (WATCH) study

Figures & data

Table I Demographic characteristics of participants in original studies and the total WATCH cohort

Characteristic	ASP	CANHR	EARTH	GOCADAN	WATCH
Total N	584	1,157	1,493	1,335	4,569
Median age (years)	43	36	38	41	39
Age range (years)	25–91	18–94	18–86	18–95	18–95
Gender, N (%)
Men	271 (46)	542 (47)	699 (47)	604 (45)	2,116 (46)
Women	313 (54)	615 (53)	794 (53)	731 (55)	2,453 (54)

ASP=Alaska–Siberia Project; CANHR=Center for Alaska Native Health Research; EARTH=Education and Research Toward Health; GOCADAN=Genetics of Coronary Artery Disease in Alaska Natives.

Fig. 1.  WATCH study data consolidation flow.

Table II Demographic characteristics in the WATCH surveillance subset

Characteristic/risk factor	CANHR	EARTH	GOCADAN	WATCH
Total N	610	809	1,335	2,754
Median age (years)	40	41	41	41
Age range (years)	18–87	18–86	18–95	18–95
Gender, N (%)
Men	248 (41)	366 (45)	604 (45)	1,218 (44)
Women	362 (59)	443 (55)	731 (55)	1,536 (56)

CANHR=Center for Alaska Native Health Research; EARTH=Education and Research Toward Health; GOCADAN=Genetics of Coronary Artery Disease in Alaska Natives.

Fig. 2 Comparison of select baseline characteristics in total WATCH cohort and follow-up subset. Note: Smoked=participants who currently or previously smoked cigarettes; FH=family history, DZ=disease, DM=type 2 diabetes, MI=myocardial infarction; HTN=hypertension; HiChol=high cholesterol.

Fig. 3.  Comparison of means for baseline clinical measurements in total WATCH cohort and follow-up subset. Note: SBP=systolic blood pressure (in mmHg); LDL=low-density lipoprotein cholesterol, TG=triglycerides, FPG=fasting plasma glucose, M HDL-C=male high-density lipoprotein cholesterol, and F HDL-C=female high-density lipoprotein cholesterol (all in mg/dL); MWC=male waist circumference; and FWC=female waist circumference (both in centimetres).