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Table 1—

Means (SE) or percentages for selected measures at years 0, 7, and 10 by current use of OCs

MeasureYear 0
Year 7
Year 10
Not CurrentCurrentP valueNot currentCurrentP valueNot currentCurrentP value
N 1,318 606  1,527 409  1,633 287  
Age (years) 25.5 (0.1) 24.3 (0.1) <0.0001 32.6 (0.1) 30.5 (0.2) <0.0001 35.4 (0.1) 33.6 (0.2) <0.0001 
Race (% African-American) 47.9 56.4 <0.0001 51.4 47.4 0.15 52.1 40.1 <0.0001 
Education (years) 13.9 (0.1) 14.0 (0.1) 0.62 14.5 (0.1) 15.0 (0.1) <0.0001 14.6 (0.1) 15.3 (0.1) <0.0001 
Number of pregnancies 1.2 (0.0) 0.9 (0.1) 0.0015 2.0 (0.0) 1.4 (0.1) <0.0001 2.3 (0.0) 1.4 (0.1) <0.0001 
Family history of diabetes 18.0 17.0 0.55 24.3 (5) 19.4 0.042 29.9 26.7 0.27 
BMI (kg/m224.9 (0.2) 24.1 (0.2) 0.0045 27.4 (0.2) 25.4 (0.3) <0.0001 28.2 (0.2) 25.8 (0.4) <0.0001 
Waist-to-hip ratio 0.74 (0.002) 0.73 (0.002) <0.0001 0.76 (0.002) 0.73 (0.003) <0.0001 0.76 (0.002) 0.74 (0.004) <0.0001 
Alcohol (ml ethanol/day) 7.1 (0.4) 7.4 (0.5) 0.69 6.3 (0.3) 5.6 (0.5) 0.32 6.5 (0.4) 6.3 (0.7) 0.76 
Physical activity score* 291 (154,483) 284 (154,476) 0.53 204 (95,372) 220 (107,408) 0.13 196 (85,356) 227 (112,428) 0.008 
Current smoker (%) 34.8 33.0 0.42 26.8 19.1 0.002 24.7 15.4 <0.0001 
Currently married (%) 25.5 23.3 0.29 44.0 42.4 0.58 47.3 47.7 0.90 
Mean arterial pressure (mmHg) 80.1 (0.2) 80.2 (0.3) 0.92 80.2 (0.3) 79.8 (0.4) 0.52 82.9 (0.3) 82.5 (0.5) 0.52 
HDL (mg/dl) 55.7 (0.4) 56.4 (0.5) 0.33 54.8 (0.4) 57.6 (0.7) 0.0002 53.5 (0.3) 56.9 (0.9) 0.0002 
Triglyceride (mg/dl)* 52 (30) 69 (36) <0.0001 56 (38) 73 (44.5) <0.0001 62 (44) 78 (54) <0.0001 
MeasureYear 0
Year 7
Year 10
Not CurrentCurrentP valueNot currentCurrentP valueNot currentCurrentP value
N 1,318 606  1,527 409  1,633 287  
Age (years) 25.5 (0.1) 24.3 (0.1) <0.0001 32.6 (0.1) 30.5 (0.2) <0.0001 35.4 (0.1) 33.6 (0.2) <0.0001 
Race (% African-American) 47.9 56.4 <0.0001 51.4 47.4 0.15 52.1 40.1 <0.0001 
Education (years) 13.9 (0.1) 14.0 (0.1) 0.62 14.5 (0.1) 15.0 (0.1) <0.0001 14.6 (0.1) 15.3 (0.1) <0.0001 
Number of pregnancies 1.2 (0.0) 0.9 (0.1) 0.0015 2.0 (0.0) 1.4 (0.1) <0.0001 2.3 (0.0) 1.4 (0.1) <0.0001 
Family history of diabetes 18.0 17.0 0.55 24.3 (5) 19.4 0.042 29.9 26.7 0.27 
BMI (kg/m224.9 (0.2) 24.1 (0.2) 0.0045 27.4 (0.2) 25.4 (0.3) <0.0001 28.2 (0.2) 25.8 (0.4) <0.0001 
Waist-to-hip ratio 0.74 (0.002) 0.73 (0.002) <0.0001 0.76 (0.002) 0.73 (0.003) <0.0001 0.76 (0.002) 0.74 (0.004) <0.0001 
Alcohol (ml ethanol/day) 7.1 (0.4) 7.4 (0.5) 0.69 6.3 (0.3) 5.6 (0.5) 0.32 6.5 (0.4) 6.3 (0.7) 0.76 
Physical activity score* 291 (154,483) 284 (154,476) 0.53 204 (95,372) 220 (107,408) 0.13 196 (85,356) 227 (112,428) 0.008 
Current smoker (%) 34.8 33.0 0.42 26.8 19.1 0.002 24.7 15.4 <0.0001 
Currently married (%) 25.5 23.3 0.29 44.0 42.4 0.58 47.3 47.7 0.90 
Mean arterial pressure (mmHg) 80.1 (0.2) 80.2 (0.3) 0.92 80.2 (0.3) 79.8 (0.4) 0.52 82.9 (0.3) 82.5 (0.5) 0.52 
HDL (mg/dl) 55.7 (0.4) 56.4 (0.5) 0.33 54.8 (0.4) 57.6 (0.7) 0.0002 53.5 (0.3) 56.9 (0.9) 0.0002 
Triglyceride (mg/dl)* 52 (30) 69 (36) <0.0001 56 (38) 73 (44.5) <0.0001 62 (44) 78 (54) <0.0001 

Data are means (SE) or %.

*

Median and interquartile range presented; rank-sum test used for comparison.

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