Estimations of sociodemographic and health and health related characteristics according to DMC3-study and NetHIS, both surveys weighted for the Dutch population of 1998, and the differences between the surveys, including 99% confidence limits (CL)
| DMC3-study % | NetHIS % | Difference3-150% | 99% CL | |
| Sociodemographic characteristics | ||||
| Household composition | ||||
| One person | 16.7 | 17.4 | 0.7 | −1.3, 2.7 |
| Two persons | 40.6 | 39.5 | 1.1 | −1.6, 3.8 |
| More than two | 42.7 | 43.2 | 0.5 | −2.2, 3.2 |
| Education (highest level reached) | ||||
| Primary school | 14.5 | 21.1 | 6.6 | 4.4, 8.8 |
| Junior (vocational) education | 34.7 | 26.0 | 8.7 | 6.2, 11.2 |
| Secondary (vocational) education | 28.3 | 32.0 | 3.7 | 1.3, 6.1 |
| Vocational colleges, university | 22.6 | 20.8 | 1.8 | −0.4, 4.0 |
| Work status | ||||
| Have paid work >12 hours/week | 55.5 | 56.0 | 0.5 | −2.2, 3.2 |
| Wants paid work >12 hours/week | 6.4 | 6.6 | 0.2 | −1.1, 1.5 |
| Does not want paid work >12 hours/week | 14.9 | 15.0 | 0.1 | −1.9, 2.1 |
| Pension, work disabled | 23.2 | 22.4 | 0.8 | −1.7, 3.3 |
| Health indicators | ||||
| Perceived health (by mark)3-151 | ||||
| 1–5 (bad) | 6.2 | 6.3 | 0.1 | −1.3, 1.5 |
| 6–7 (average) | 30.1 | 24.7 | 5.4 | 2.8, 8.0 |
| 7.5–8.5 (good) | 40.6 | 44.1 | 3.5 | 0.7, 6.3 |
| >8.5 (excellent) | 23.2 | 24.2 | 1.0 | −1.4, 3.4 |
| Limitations in daily life | 12.7 | 16.6 | 3.9 | 1.9, 5.9 |
| Chronic conditions3-151 | ||||
| COPD | 8.1 | 7.8 | 0.3 | −1.2, 1.8 |
| Sinusitis | 11.8 | 9.6 | 2.2 | 0.5, 3.9 |
| Coronary heart disease or other severe heart disease | 2.9 | 3.7 | 0.8 | −0.3, 1.9 |
| Hypertension | 11.9 | 11.1 | 0.8 | −1.1, 2.7 |
| (consequences of) Stroke | 0.8 | 0.9 | 0.1 | −0.5, 0.7 |
| Peptic ulcer | 1.9 | 1.5 | 0.4 | −0.4, 1.2 |
| Severe intestinal disorder | 4.0 | 2.2 | 1.8 | 0.8, 2.8 |
| Diabetes | 3.1 | 3.0 | 0.1 | −1.0, 1.2 |
| Thyroid disorders | 2.6 | 1.8 | 0.8 | −0.1, 1.7 |
| Epilepsy | 0.6 | 0.5 | 0.1 | −0.3, 0.5 |
| Dizziness and falling | 2.9 | 1.8 | 1.1 | 0.2, 2.0 |
| Migraine | 10.0 | 7.5 | 2.5 | 0.9, 4.1 |
| Severe skin disease | 2.0 | 1.9 | 0.1 | −0.7, 0.9 |
| Cancer | 1.6 | 1.3 | 0.3 | −0.4, 1.0 |
| Risk indicators | ||||
| Smoking3-151 | ||||
| Every day | 24.2 | 29.4 | 5.2 | 2.8, 7.6 |
| Occasionally | 5.5 | 5.4 | 0.1 | −1.1, 1.3 |
| Former every day | 22.2 | 24.2 | 2.0 | −0.5, 4.5 |
| Former occasionally | 13.6 | 10.1 | 3.5 | 1.6, 5.4 |
| Never | 34.5 | 31.0 | 3.5 | 0.9, 6.1 |
| Body mass index | ||||
| <18.5 | 1.5 | 1.7 | 0.2 | −0.5, 0.9 |
| 18.5–25 | 57.0 | 55.9 | 1.1 | −1.6, 3.8 |
| 25–30 | 33.1 | 33.7 | 0.6 | −2.0, 3.2 |
| >30 | 8.4 | 8.8 | 0.4 | −1.2, 2.0 |
| Use of health care services | ||||
| Contact with GP, past two months | 46.2 | 36.6 | 9.6 | 6.9, 12.3 |
| Contact with GP, past year | 76.9 | 77.3 | 0.4 | −1.8, 2.6 |
| Contact with medical specialist, past two months | 20.3 | 16.1 | 4.2 | 2.1, 6.3 |
| Contact with medical specialist, past year | 35.3 | 40.8 | 5.5 | 2.8, 8.2 |
| Contact with physiotherapist, past year | 22.7 | 18.9 | 3.8 | 1.6, 6.0 |