This paper is great.
The authors are paediatricians in a big hospital in Delhi. The paper isn't a research paper strictly speaking - it's an observational study. Whenever they saw a child aged 6 months to 2 years in their outpatients clinic, they asked the mum if she would mind answering a whole lot of questions about weaning.
They found that 63.5% of the babies were exclusively breastfed to 6 months, and 17.5% had started solids at 6 months.
Are the paediatricians delighted with these figures? No, they're very concerned, because the ones weaning at 6 months were the earliest ones to wean. The rest were weaned later, and 16% had still not had any solid food at 2 years. The average age of weaning to solids was just over 13 months.
The authors rather sternly conclude that more education is needed.
I'm enjoying imagining the local equivalent of MN. The OP posts very indignantly to say "I took DS to the clinic with his rash and the doctor told me off because he's not been weaned yet. He's only 18 months old fgs!"
And the other posters on the thread say "Just do what your instincts tell you, you know your own child best" and "I weaned all mine at 2 years and they're absolutely fine" and "Just ignore the doctor, it's only guidelines, they change all the time. Before you know it, it'll be back to 13 months again."
Same planet, different worlds...