Table 1.

Characteristics of participants with dietary records from the Airwave Health Monitoring Study

	Men (n 2568)		Women (n 1510)
	Mean	SD	Mean	SD	p Value
Age at screening, years	42.4	8.9	39.9	9.5	<0.0001*
Body mass index, kg/m2	27.7	3.6	25.6	4.6	<0.0001*
Basal metabolic rate, kcal per day	1906.0	159.0	1431.0	124.0	<0.0001*
Daily energy, kcal	2107.0	502.0	1711.0	395.0	<0.0001*
Energy intake: basal metabolic rate	1.1	0.3	1.2	0.6	<0.0001*
Macronutrient breakdown of energy intake	Median	IQR	Median	IQR
% Energy intake carbohydrate	43.9	6.3	44.9	6.3	<0.0001*
% Energy intake protein	17.0	9.5	16.7	7.7	0.001*
% Energy intake total fat	33.6	5.3	31.4	5.5	0.004*
% Energy intake saturated fat	12.3	2.8	12.5	2.8	0.053*
% Energy intake alcohol	4.3	7.4	3.1	6.4	<0.0001†
% Classified under-reporting energy intake	56.0		41.0		<0.0001‡

*Student's t-test compared mean values between male and female participants.

†Mann-Whitney U test compared median values between male and female participants.

‡χ² test compared differences between men and women for plausible and under-reporters of energy intake.