If the woman is older than the baby's father then is the baby's gender always a girl?

A co-worker of mine told me their was study that said 86% of women who were older than the baby's father produced girls?

Is this true or their any women out there older than their baby's father and had a boy?

This study was based on the first child.

My mom was older than my stepdad and they had 1 b 1 g together.

If that is at all true, it's because older women do have statistically more girls than the general population - but I DOUBT it's 86%! I'd love to read it tho.

Thank God I know 2 couples IRL where wife is older then husband and both have boys. Otherwise I would be freaking out since I'm a year older then my DH lol!
One is our best man, his wife is 4 years older then him, they have :DS:, other is a teacher from my DD1 school, she is 6 years older then her husband, they have :DS: :DS:

I tried to find something on the internet about a study but nothing came up.
I asked my co-worker if he had the article he said no, he read that years ago.

I am a year older than my DH, and our first child was a girl. Our second child was a boy.

Oh, but I have a good friend who is several years older than her DH and they have 2 boys-- both born when she was a "mature mama" (one at 38, the other at 40).

If this were the case....I would have all girls right now then!
Both my ex and my current Hubby are younger than me!

I'm older than my husband and we had a boy (second marriage).

I'm older, 2 boys!

My grandmother's second husband was younger than she was and she had her first son with him (in her previous marriage, she had four daughters including my mother).