The report on women's reproductive condition showed that, of 18.7 million females aged from 15 to 49, 65.1 per cent were married, 28.5 per cent single and 6.4 per cent widows, divorcees or separated.

Some 12.6 million women, or 67 per cent, lived outside municipalities. The number of single women in municipal areas was 6.4 per cent higher than those living outside.

Bangkok topped the list for single women at 41.8 per cent, while the central and northern regions had the highest amount of widows, divorcees or separated woman, the report said.

Of the married, 78.8 per cent said they did not seek any advice regarding family planning before marriage.

The NSO also surveyed Thai males and females aged from 45 to 59 about their health care and found 59.8 per cent had an annual check-up.

About 29 per cent overall said they had a check-up every year, while 40.2 per cent said they did not. Women were also found to be more health-conscious than men.