Table 1.
Characteristics of participants by status of self-rated oral health (SROH) among 3201 men and women aged 25–50 years in Japan during 2010–2011
| Characteristic | Poor SROH* |
p Value† | |
|---|---|---|---|
| n | (%) | ||
| Sex | |||
| Men | 529 | (29.7) | 0.0002 |
| Women | 334 | (23.8) | |
| Age | |||
| 25–29 | 132 | (22.5) | 0.0001 |
| 30–34 | 138 | (25.0) | |
| 35–39 | 173 | (27.2) | |
| 40–44 | 175 | (25.8) | |
| 45–50 | 225 | (33.8) | |
| Marital status | |||
| Married | 597 | (27.9) | 0.14 |
| Not married‡ | 269 | (25.5) | |
| Occupations | |||
| Specialists | 83 | (28.0) | 0.0009 |
| White-collar workers | 497 | (24.9) | |
| Blue-collar workers | 287 | (31.5) | |
| Annual household income | |||
| Less than 5 million JPY(approximately GBP 29 400)§ | 226 | (32.3) | 0.0012 |
| 5–7.5 million JPY(approximately GBP 29 400–44 100)§ | 179 | (26.6) | |
| More than 7.5 million JPY (approximately GBP 44 100)§ | 250 | (24.3) | |
| Wealth (household financial and other assets) | |||
| Less than 3 million JPY (approximately GBP 17 600)§ | 201 | (34.7) | <0.0001 |
| 3–5 million JPY (approximately GBP 17 600–29 400)§ | 169 | (30.2) | |
| More than 5 million JPY (approximately GBP 29 400)§ | 173 | (22.9) | |
| Education | |||
| High school or less | 263 | (36.3) | <0.0001 |
| Vocational/junior college | 262 | (26.9) | |
| University or more | 333 | (22.7) | |
| Economic situation at home when respondents were 5 years old | |||
| Poor, very poor | 226 | (34.8) | <0.0001 |
| Normal | 502 | (25.7) | |
| Well off, very well off | 133 | (23.5) | |
| Economic situation at home when respondents were 15 years old | |||
| Poor, very poor | 216 | (35.9) | <0.0001 |
| Normal | 467 | (24.8) | |
| Well off, very well off | 180 | (25.9) | |
| Job stress | |||
| 1st tertile (least stressful) | 289 | (25.2) | 0.0017 |
| 2nd tertile | 272 | (25.2) | |
| 3rd tertile (most stressful) | 300 | (31.3) | |
| Social support in workplace | |||
| 1st tertile (most supportive) | 266 | (23.4) | 0.0014 |
| 2nd tertile | 278 | (29.1) | |
| 3rd tertile (least supportive) | 295 | (29.8) | |
| Working hours per week | |||
| <40 | 360 | (26.7) | 0.027 |
| 40–50 | 162 | (23.5) | |
| 50–60 | 81 | (26.3) | |
| >60 | 67 | (34.2) | |
| Type of employment | |||
| Permanent | 526 | (25.3) | 0.0083 |
| Precarious | 272 | (30.9) | |
| Self-employed | 66 | (27.3) | |
*The status of SROH was determined by the question: “Overall, how would you rate the health of your teeth and gums?” “Poor SROH” includes respondents of “not so good” and “poor,” and “Good SROH” includes respondents of “excellent,” “good” and “fair.”
†p Value was calculated by χ2 test.
‡Divorced/separated and widowed people were classified into “not married”.
§Income and wealth were converted at 170 JPY (Japanese yen) to 1 GBP (Great Britain pound).