Non-respondents were younger on average (mean age 50 years, range 17 91) and a slightly higher proportion were males than females (16% compared with 11% of respondents).
The patients who died were older than those who survived (66.8 ± 11.1 years versus 46.1 ± 15.4 years; P < 0.05) and a higher proportion were males (61%).
Trainees were relatively diverse in terms of age, but only a small proportion were males (15%) and an even smaller proportion (9%) were from BME backgrounds.
Of 4,234 individuals with data on risk factors, an equivalent proportion were male.
Patients who were ever (versus never) exposed to lung protective ventilation were younger, and a significantly greater proportion were male and received neuromuscular blockers (table 1).
Patients receiving kidney transplants at volume compliant hospitals were generally older, and a higher proportion were male when compared to those treated at non-compliant hospitals (Table 1).
The median age of patients with acute dengue was 27.6 years (IQR 22 45 days), and a similar proportion were male versus female (p = 0.26).
Compared to the subjects excluded due to missing data, the included participants were, on average, younger, had a greater number of comorbidities and a greater proportion were male (p < 0.05, data not shown).
Compared with the nondiabetic sample, those with an HFU were older and had higher BMI, waist circumference, and depression scores; a higher proportion were male and physically inactive with low education, angina pectoris, myocardial infarction, stroke, and hypertension; and a lower proportion were smokers.
Compared to the non-diabetic sample, those with a history of diabetic foot ulcer were older and had higher BMI and mean waist circumference; a higher proportion were male, physically inactive, had low education, angina pectoris, myocardial infarction and stroke, and a lower proportion were smokers (see Additional file 1).
About 32% of adolescents reported being sexually active; a higher proportion being males than females.
