Table 4.  Hazard ratios (95% confidence intervals) for mortality over 21 years from first screening by level of perceived stress at first screening Perceived stress* Adjusted for age Adjusted for age and social class Adjusted for age, social class, and risk factors All cause (1601 deaths):   High 0.90 (0.77 to 1.05) 0.96 (0.82 to 1.11) 0.94 (0.81 to 1.11)   Medium 0.85 (0.76 to 0.94) 0.93 (0.83 to 1.04) 0.92 (0.82 to 1.03)   Low 1.00 1.00 1.00   P for trend 0.030 0.40 0.30 Cardiovascular disease (820 deaths):   High 0.83 (0.72 to 0.97) 0.91(0.78 to 1.06) 0.91 (0.78 to 1.06)   Medium 0.84 (0.68 to 1.05) 0.90 (0.72 to 1.13) 0.91(0.73 to 1.14)   Low 1.00 1.00 1.00   P for trend 0.036 0.25 0.28 Coronary heart disease (609 deaths):   High 0.89 (0.69 to 1.15) 0.95 (0.74 to 1.23) 0.98 (0.75 to 1.27)   Medium 0.87 (0.73 to 1.04) 0.96 (0.80 to 1.14) 0.95 (0.81 to 1.16)   Low 1.00 1.00 1.00   P for trend 0.20 0.64 0.79 * High, n=743; medium, n=3037; low, n=1826. Risk factors: smoking (cigarettes per day, past, current, or never smokers), alcohol consumption (0, >0-15, 15 units weekly), weekly hours of exercise, cholesterol concentration (mmol/l), diastolic blood pressure (mm Hg), body mass index (kg/m2), percentage of forced expiratory volume in one second. Participants with missing values excluded.